CN218521345U - Pressure-resistant membrane electrode and electrochemical hydrogen pump comprising same - Google Patents
Pressure-resistant membrane electrode and electrochemical hydrogen pump comprising same Download PDFInfo
- Publication number
- CN218521345U CN218521345U CN202221688431.8U CN202221688431U CN218521345U CN 218521345 U CN218521345 U CN 218521345U CN 202221688431 U CN202221688431 U CN 202221688431U CN 218521345 U CN218521345 U CN 218521345U
- Authority
- CN
- China
- Prior art keywords
- mesh
- layer
- nickel
- membrane electrode
- titanium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Inert Electrodes (AREA)
Abstract
The utility model provides a resistance to compression membrane electrode and contain its electrochemistry hydrogen pump. The pressure-resistant membrane electrode sequentially comprises a first supporting layer, a membrane electrode A and a second supporting layer, wherein the membrane electrode A sequentially comprises a first gas diffusion layer, a first catalyst layer, an ion exchange membrane layer, a second catalyst layer and a second gas diffusion layer; the first and second support layers haveHas a microporous structure; the mesh number of the microporous structure in the first supporting layer is more than or equal to 20 meshes; the mesh number of the microporous structures in the second supporting layer is more than or equal to 20 meshes. The utility model provides a resistance to compression membrane electrode electrochemical performance is high, and current density can reach 215mA cm at most ‑2 (ii) a The compression resistance is high and can reach dozens of MPa.
Description
Technical Field
The utility model relates to a resistance to compression membrane electrode and contain its electrochemistry hydrogen pump.
Background
Hydrogen energy is a unique secondary energy source, and is increasingly paid more attention from countries in the world due to its characteristics of cleanness and no pollution. In the future, besides the hydrogen preparation technology, the development of hydrogen separation, purification and compression technology which has high efficiency, low cost and reliable performance and can form mass production becomes the key for developing hydrogen energy economy.
An electrochemical hydrogen pump (also called as an electrochemical hydrogen compressor) is hydrogen separation and purification equipment. Its structure is similar to proton exchange membrane fuel cell, but it adopts electrolysis mode, and can oxidize hydrogen at anode and reduce hydrogen at cathode. The compression of hydrogen can be achieved with electrochemical hydrogen pumps, which can reach up to several hundred atmospheres of maximum output pressure. Compared with the traditional mechanical compression means, the electrochemical hydrogen pump has many advantages, such as simple structure, high compression efficiency and low energy consumption; no mechanical abrasion, quiet operation and no noise; the compressed hydrogen has high purity and cannot be polluted by lubricating oil and the like. The advantages of electrochemical hydrogen pumps are even more pronounced in situations where the amount of hydrogen is limited.
The working principle of the electrochemical hydrogen pump is as follows: the pressurization is realized by using oxidation-reduction reaction, the low-pressure hydrogen generates oxidation reaction at the anode to generate protons, the protons are transferred to the cathode through the diaphragm and then reduced into hydrogen, and the cathode hydrogen generates backpressure under the drive of external voltage. The electrochemical compression process of hydrogen can theoretically be performed under a condition close to isothermal, and thus more efficient hydrogen compression is expected to be realized. The compression process is also completely carried out under a static condition, is a potential hydrogen compression mode with low cost and low power consumption, is expected to be applied to a 35MPa/70MPa hydrogenation station, and improves the economy of a hydrogen energy industrial chain.
Like proton exchange Membrane fuel cells, membrane Electrode Assemblies (MEAs) are also the core components of proton exchange Membrane electrochemical hydrogen compression devices, and are composed of a proton exchange Membrane, an electrocatalyst, and a gas diffusion Electrode. The membrane electrode realizes zero-distance contact between the membrane and the electrode, reduces the ohmic resistance loss of the system caused by electrolyte, and can improve the energy conversion efficiency of the system. Since the cathode reaction, the anode reaction, and the electron conduction and the ion conduction in the electrochemical reaction process all occur on the membrane electrode, the membrane electrode plays a significant role.
However, the membrane electrode used in the existing electrochemical hydrogen pump has poor pressure resistance, and it is difficult to achieve more efficient hydrogen compression. Therefore, how to effectively improve the pressure resistance of the membrane electrode is a technical problem to be solved in the field.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome prior art's defect, and provide a resistance to compression membrane electrode and contain its electrochemistry hydrogen pump. The pressure-resistant membrane electrode of the utility model has high electrochemical performance and strong pressure resistance, and can reach dozens of MPa.
The utility model provides a pressure-resistant membrane electrode, which sequentially comprises a first supporting layer, a membrane electrode A and a second supporting layer, wherein the membrane electrode A sequentially comprises a first gas diffusion layer, a first catalyst layer, an ion exchange membrane layer, a second catalyst layer and a second gas diffusion layer;
the first support layer and the second support layer have a microporous structure;
the mesh number of the microporous structure in the first supporting layer is more than or equal to 20 meshes;
the mesh number of the microporous structures in the second supporting layer is more than or equal to 20 meshes.
The utility model discloses in, first supporting layer with the supporting layer material of second supporting layer can be the same, also can be different.
In the present invention, the support material in the first support layer and/or the second support layer may be a support material conventional in the art, such as a metal, such as titanium and/or nickel.
In the present invention, the first support layer and/or the second support layer may be a titanium mesh and/or a nickel mesh, for example, "nickel mesh" or "titanium mesh and nickel mesh".
In the present invention, the mesh number of the microporous structure in the first support layer may be 20-200 mesh, for example, 20 mesh, 40 mesh, 60 mesh, 80 mesh, 100 mesh or 200 mesh.
In the present invention, the mesh number of the microporous structure in the second support layer may be 20-200 meshes, such as 20 meshes, 40 meshes, 60 meshes, 80 meshes, 100 meshes or 200 meshes.
In the present invention, when the first supporting layer includes a nickel mesh, preferably, the mesh number of the nickel mesh is 20 to 100 meshes, for example, 20 meshes, 40 meshes, 60 meshes, or 100 meshes.
In the present invention, when the first support layer comprises a titanium mesh, it is preferable that the mesh number of the titanium mesh is 40 to 200 meshes, for example, 40 meshes, 60 meshes, 80 meshes, 100 meshes or 200 meshes.
In the present invention, when the second support layer includes a nickel mesh, preferably, the mesh number of the nickel mesh is 20 to 100 meshes, for example, 20 meshes, 40 meshes, 60 meshes, or 100 meshes.
In the present invention, when the second supporting layer includes a titanium mesh, it is preferable that the mesh number of the titanium mesh is 40 to 200 meshes, for example, 40 meshes, 60 meshes, 80 meshes, 100 meshes or 200 meshes.
In the present invention, preferably, the first supporting layer is a 100-mesh nickel mesh.
In the present invention, preferably, the first supporting layer is a 40-60 mesh titanium mesh and a 20 mesh nickel mesh, for example, a 40 mesh titanium mesh and a 20 mesh nickel mesh, or a 60 mesh titanium mesh and a 20 mesh nickel mesh.
In the present invention, preferably, the first supporting layer is a titanium mesh of 80-200 meshes and a nickel mesh of 20-100 meshes, for example: an 80 mesh titanium mesh and a 60 mesh nickel mesh, a 100 mesh titanium mesh and a 40-100 mesh nickel mesh (also, for example, a 100 mesh titanium mesh and a 40 mesh nickel mesh, or a 100 mesh titanium mesh and a 100 mesh nickel mesh), or, a 200 mesh titanium mesh and a 20-100 mesh nickel mesh (also, for example, a 200 mesh titanium mesh and a 20 mesh nickel mesh, or a 200 mesh titanium mesh and a 40 mesh nickel mesh, or a 200 mesh titanium mesh and a 100 mesh nickel mesh).
In the present invention, preferably, the second supporting layer is a 100-mesh nickel mesh.
In the present invention, it is preferable that the second support layer is a 40-60 mesh titanium mesh and a 20 mesh nickel mesh, for example, a 40 mesh titanium mesh and a 20 mesh nickel mesh, or a 60 mesh titanium mesh and a 20 mesh nickel mesh.
In the present invention, preferably, the second support layer is a titanium mesh of 80-200 meshes and a nickel mesh of 20-100 meshes, for example: an 80 mesh titanium mesh and a 60 mesh nickel mesh, a 100 mesh titanium mesh and a 40-100 mesh nickel mesh (also, for example, a 100 mesh titanium mesh and a 40 mesh nickel mesh, or a 100 mesh titanium mesh and a 100 mesh nickel mesh), or, a 200 mesh titanium mesh and a 20-100 mesh nickel mesh (also, for example, a 200 mesh titanium mesh and a 20 mesh nickel mesh, or a 200 mesh titanium mesh and a 40 mesh nickel mesh, or a 200 mesh titanium mesh and a 100 mesh nickel mesh).
In the utility model discloses, the supporting layer can improve the compressive property of resistance to compression membrane electrode.
In the present invention, the first supporting layer may contain one or more layers of supporting layer material.
Wherein, preferably, the first support layer is 2 layers of nickel nets, "1 layer of titanium nets and 1 layer of nickel nets" or "1 layer of titanium nets and 2 layers of nickel nets".
When the first support layer is a 2-layer nickel net, the mesh number of the nickel net can be 100 meshes.
When the first support layer is 1 layer of titanium net and 1 layer of nickel net, the mesh number of the titanium net can be 40-60 meshes, and the mesh number of the nickel net can be 20 meshes; for example, a 40 mesh titanium mesh and a 20 mesh nickel mesh, or a 60 mesh titanium mesh and a 20 mesh nickel mesh.
When the first support layer is a 1-layer titanium mesh and a 2-layer nickel mesh, the mesh number of the titanium mesh may be 80-200 meshes, and the mesh number of the nickel mesh may be 20-100 meshes, for example: an 80 mesh titanium mesh and a 60 mesh nickel mesh, a 100 mesh titanium mesh and a 40-100 mesh nickel mesh (also, for example, a 100 mesh titanium mesh and a 40 mesh nickel mesh, or a 100 mesh titanium mesh and a 100 mesh nickel mesh), or, a 200 mesh titanium mesh and a 20-100 mesh nickel mesh (also, for example, a 200 mesh titanium mesh and a 20 mesh nickel mesh, or a 200 mesh titanium mesh and a 40 mesh nickel mesh, or a 200 mesh titanium mesh and a 100 mesh nickel mesh).
Wherein, the pressure-resistant membrane electrode can sequentially comprise: 2 layers of nickel nets, the membrane electrode A and the second supporting layer.
Wherein, the pressure-resistant membrane electrode can sequentially comprise: 1 layer of titanium net, 1 layer of nickel net, the membrane electrode A and the second supporting layer.
Wherein, the pressure-resistant membrane electrode can sequentially comprise: 1 layer of titanium net, 2 layers of nickel net, the membrane electrode A and the second supporting layer.
In the present invention, the second supporting layer may comprise one or more supporting layer materials.
Wherein, preferably, the second support layer is 2 layers of nickel nets, "1 layer of titanium nets and 1 layer of nickel nets" or "1 layer of titanium nets and 2 layers of nickel nets".
When the second support layer is a 2-layer nickel mesh, the mesh number of the nickel mesh may be 100 meshes.
When the second supporting layer is 1 layer of titanium net and 1 layer of nickel net, the mesh number of the titanium net can be 40-60 meshes, and the mesh number of the nickel net can be 20 meshes; for example, a 40 mesh titanium mesh and a 20 mesh nickel mesh, or a 60 mesh titanium mesh and a 20 mesh nickel mesh.
When the second support layer is 1 layer of titanium mesh and 2 layers of nickel mesh, the mesh number of the titanium mesh may be 80-200 meshes, and the mesh number of the nickel mesh may be 20-100 meshes, for example: an 80 mesh titanium mesh and a 60 mesh nickel mesh, a 100 mesh titanium mesh and a 40-100 mesh nickel mesh (also, for example, a 100 mesh titanium mesh and a 40 mesh nickel mesh, or a 100 mesh titanium mesh and a 100 mesh nickel mesh), or, a 200 mesh titanium mesh and a 20-100 mesh nickel mesh (also, for example, a 200 mesh titanium mesh and a 20 mesh nickel mesh, or a 200 mesh titanium mesh and a 40 mesh nickel mesh, or a 200 mesh titanium mesh and a 100 mesh nickel mesh).
Wherein, the pressure-resistant membrane electrode can sequentially comprise: the first supporting layer, the membrane electrode A and 2 layers of nickel nets.
Wherein, the pressure-resistant membrane electrode can sequentially comprise: the membrane electrode comprises a first supporting layer, a membrane electrode A,1 layer of nickel net and 1 layer of titanium net.
Wherein, the pressure-resistant membrane electrode can sequentially comprise: the membrane electrode comprises a first supporting layer, a membrane electrode A, 2 layers of nickel nets and 1 layer of titanium net.
In the present invention, the material of the first gas diffusion layer and the material of the second gas diffusion layer may be the same or different.
In the present invention, the material of the first gas diffusion layer and/or the second gas diffusion layer may be a material that is conventional in the art and can implement gas diffusion, such as carbon paper, carbon cloth, or a teflon film.
In the present invention, the first gas diffusion layer and/or the second gas diffusion layer may be a carbon paper layer, a carbon cloth layer or a polytetrafluoroethylene film layer, such as a carbon paper layer or a carbon cloth layer.
In the present invention, the first gas diffusion layer may comprise one or more layers of gas diffusion layer material.
In the present invention, the second gas diffusion layer may comprise one or more layers of gas diffusion layer material.
In the present invention, the size of the first gas diffusion layer and/or the second gas diffusion layer may be a size conventional in the art, and generally corresponds to the size of the catalyst layer.
In the present invention, the first gas diffusion layer and/or the second gas diffusion layer may be circular. When the first gas diffusion layer and/or the second gas diffusion layer is circular, the diameter of the first gas diffusion layer and/or the second gas diffusion layer may be 4-6cm, for example 5cm.
The utility model discloses in, first catalyst layer with catalyst in the second catalyst layer is the catalyst that can catalyze the following reaction at least:
H 2 -2e→H + ；
H + +2e→H 2 。
in the present invention, the kind of the catalyst in the first catalyst layer and the second catalyst layer may be the same or different.
In the present invention, the catalyst in the first catalyst layer and the second catalyst layer may be a platinum carbon catalyst (Pt/C catalyst).
Wherein, in the platinum-carbon catalyst, the mass fraction of platinum-carbon can be 30-50%, for example 40%.
Wherein, the platinum carbon catalyst can exist in the form of slurry, for example, the platinum carbon catalyst comprises the following components:
the platinum-carbon catalyst slurry comprises a platinum-carbon catalyst, a Nafion solution and an organic solvent, wherein the components can be prepared into a black ink-shaped solution which is uniformly dispersed, namely the platinum-carbon catalyst slurry.
The model of Nafion in the Nafion solution can be DuPont D520.
The mass fraction of Nafion in the Nafion solution may be 1-10%, for example 5%.
The organic solvent may be isopropyl alcohol and/or anhydrous ethanol, such as isopropyl alcohol and anhydrous ethanol.
The ratio of the mass mg of the Pt/C catalyst to the volume μ L of the Nafion solution may be 40.
The ratio of the mass mg of the Pt/C catalyst to the volume mL of the organic solvent may be 40.
Preferably, the platinum-carbon catalyst slurry comprises the following components: 40mg of a 40% by mass Pt/C catalyst, 375. Mu. LNafion (DuPont D520, 5% by mass) solution, 6ml of isopropanol and 2ml of absolute ethanol.
In the utility model, the total catalyst loading of the first catalyst layer and the second catalyst layer can be 0.25-1.02 mg-cm -2 For example, 0.25mg cm -2 、0.51mg·cm -2 、0.76mg·cm -2 Or 1.02mg cm -2 。
In the present invention, the catalyst layer can be prepared by a conventional method in the art, for example, by the following method: and respectively spraying catalyst slurry (such as platinum carbon catalyst slurry) containing the catalysts in the first catalyst layer and the second catalyst layer onto the ion exchange membrane layer or the first gas diffusion layer and the second gas diffusion layer to obtain the catalyst layers.
Wherein the catalyst slurry may be as previously described.
In the present invention, the ion exchange membrane in the ion exchange membrane layer may be an ion exchange membrane conventionally used in the art, such as a perfluorosulfonic acid resin membrane, a hydrocarbon-based ion exchange membrane or an "imidazole-functionalized styrene and vinyl chloride-based polymer membrane", and further such as a perfluorosulfonic acid resin neem Nafion membrane, a Selemion AMV hydrocarbon-based ion exchange membrane (produced by asahi nitre in japan) or a Sustainion ion exchange membrane (produced by usa).
The type of the perfluorosulfonic acid resin NEPEM Nafion membrane can be N-11, and specific types can comprise N-112, N-1125, N-113, N-1135, N-114, N-115, N-117 or N-1110.
When the perfluorosulfonic acid resin NEPEM Nafion membrane is model number N-112, the perfluorosulfonic acid resin NEPEM Nafion membrane may have a thickness of 51 μm.
When the perfluorosulfonic acid resin NEPEM Nafion membrane is in the model number N-114, the perfluorosulfonic acid resin NEPEM Nafion membrane can have a thickness of 102 μm.
When the perfluorosulfonic acid resin NEPEM Nafion membrane is model number N-115, the perfluorosulfonic acid resin NEPEM Nafion membrane can have a thickness of 127 μm.
When the perfluorosulfonic acid resin NEPEM Nafion membrane is of type N-117, the perfluorosulfonic acid resin NEPEM Nafion membrane can have a thickness of 183 μm.
When the perfluorosulfonic acid resin NEPEM Nafion membrane is model number N-1110, the perfluorosulfonic acid resin NEPEM Nafion membrane can have a thickness of 254 μm.
Wherein the Sustainion ion exchange membrane can be X37-50-gradeT.
In the present invention, the size of the ion exchange membrane layer may be the size conventional in the art, and is generally larger than the size of the catalyst layer.
In the present invention, the ion exchange membrane layer may be circular. When the ion exchange membrane layer is circular, the diameter of the ion exchange membrane layer may be 6-8cm, for example 7cm.
The utility model also provides a preparation method of resistance to compression membrane electrode, it includes following step:
(1) Spraying catalyst slurry containing the catalyst in the first catalyst layer and the second catalyst layer on two sides of the ion exchange membrane layer or on one side of the first gas diffusion layer and the second gas diffusion layer to form a structure of the first catalyst layer-the ion exchange membrane layer-the second catalyst layer or a structure of the first gas diffusion layer-the first catalyst layer and the second gas diffusion layer-the second catalyst layer;
(2) When the structure of the first catalyst layer, the ion exchange membrane layer and the second catalyst layer is formed in the step (1), adding the first gas diffusion layer and the second gas diffusion layer on two sides of the structure of the first catalyst layer, the ion exchange membrane layer and the second catalyst layer respectively to form the membrane electrode A;
when the structures of the first gas diffusion layer-first catalyst layer and the second gas diffusion layer-second catalyst layer are formed in the step (1), placing the first gas diffusion layer-first catalyst layer and the second gas diffusion layer-second catalyst layer on two sides of the ion exchange membrane layer respectively, and contacting the catalyst layers in the first gas diffusion layer-first catalyst layer and the second gas diffusion layer-second catalyst layer with the ion exchange membrane layer to form the membrane electrode A;
(3) And (2) adding the first supporting layer and the second supporting layer to two sides of the membrane electrode A in the step (1) respectively to form a pressure-resistant membrane electrode.
In the step (1), the spraying equipment can be a spray pen.
In the step (1), the structure of the catalyst layer-ion exchange membrane layer-catalyst layer and the structure of the gas diffusion layer-catalyst layer may be dried to form the membrane electrode a.
Wherein, the drying treatment can be drying at room temperature (20 +/-5 ℃), and volatilizing the solvent in the catalyst slurry.
In the step (2), the method for forming the membrane electrode a may be thermal mechanical pressing.
Wherein the pressure of the pressing may be 2-4MPa, such as 2MPa or 4MPa.
Wherein the temperature of the pressing may be 50-180 ℃, such as 50 ℃,100 ℃ or 130 ℃.
Wherein the pressing time may be 1-10min, such as 2min or 5min.
Preferably, the conditions of said thermo-mechanical pressing may be: the pressure is 2-4MPa, the temperature is 50-180 ℃, and the time is 1-10min.
Preferably, the conditions of said thermo-mechanical pressing may be: the pressure is 2MPa, the temperature is 100 ℃, and the time is 5min.
Preferably, the conditions of said thermo-mechanical pressing may be: the pressure is 4MPa, the temperature is 50-130 ℃, and the time is 2-5min.
In the step (3), the method for forming the pressure-resistant membrane electrode may be roll pressing.
Wherein the rolling device can be a rolling machine. Generally, the pressing is performed by a roller press.
In the utility model, the membrane electrode is generally stored in a constant temperature and humidity box with the temperature of 20-80 ℃ and the humidity of 30-95 percent.
The utility model also provides an electrochemistry hydrogen pump, it contains resistance to compression membrane electrode.
The utility model discloses an actively advance the effect and lie in:
the pressure-resistant membrane electrode prepared by the utility model has high electrochemical performance and the highest current density can reach 215mA cm -2 (ii) a The pressure resistance is high and can reach dozens of MPa (for example, 23 MPa).
Drawings
FIG. 1 shows the results of current density tests of examples 5 and comparative examples.
FIG. 2 shows the results of the withstand voltage test of example 5 and the comparative example.
FIG. 3 is a schematic view of the membrane electrode structure of example 1; wherein: 11 is a first titanium mesh layer, 12 is a first nickel mesh layer, 13 is a second nickel mesh layer, 14 is a second titanium mesh layer, 21 is a first carbon paper layer, 22 is a second carbon paper layer, 31 is a first Pt/C catalyst layer, 32 is a second Pt/C catalyst layer, and 4 is a nafion film layer.
Detailed Description
The present invention will be more clearly and completely described in the following detailed description of the preferred embodiments in conjunction with the accompanying drawings.
In a preferred embodiment of the present invention, the pressure-resistant membrane electrode sequentially comprises: 2 layers of nickel nets, the membrane electrode A and 2 layers of nickel nets; such as 2 layers of 100 mesh nickel mesh, the membrane electrode a and 2 layers of 100 mesh nickel mesh.
In a preferred embodiment of the present invention, the pressure-resistant membrane electrode sequentially comprises: 1 layer of titanium net, 1 layer of nickel net, the membrane electrode A,1 layer of nickel net and 1 layer of titanium net. For example, the pressure-resistant membrane electrode sequentially comprises: 1 layer of 40-60 mesh titanium net, 1 layer of 20 mesh nickel net, the membrane electrode A,1 layer of 20 mesh nickel net and 1 layer of 40-60 mesh titanium net.
In a preferred embodiment of the present invention, the pressure-resistant membrane electrode sequentially comprises: 1 layer of titanium net, 2 layers of nickel net, the membrane electrode A, 2 layers of nickel net and 1 layer of titanium net.
For example, the pressure-resistant membrane electrode sequentially comprises: 1 layer of 80-200 mesh titanium net, 2 layers of 20-100 mesh nickel net, the membrane electrode A, 2 layers of 20-100 mesh nickel net and 1 layer of 80-200 mesh titanium net.
For another example, the pressure-resistant membrane electrode sequentially comprises: 1 layer of 80-mesh titanium net, 2 layers of 60-mesh nickel net, the membrane electrode A, 2 layers of 60-mesh nickel net and 1 layer of 80-mesh titanium net; or, the pressure-resistant membrane electrode sequentially comprises: 1 layer of 100 mesh titanium net, 2 layers of 40-100 mesh nickel net, the membrane electrode A, 2 layers of 40-100 mesh nickel net and 1 layer of 100 mesh titanium net; or, the pressure-resistant membrane electrode sequentially comprises: 1 layer of 200 mesh titanium net, 2 layers of 20-100 mesh nickel net, the membrane electrode A, 2 layers of 20-100 mesh nickel net and 1 layer of 200 mesh titanium net.
In the present invention, the size of the first support layer and/or the second support layer may be a size conventional in the art, and generally corresponds to the size of the first catalyst layer and the second catalyst layer.
Preferably, when the first support layer includes the nickel mesh, the nickel mesh may be circular. The nickel mesh may have a diameter of 4-6cm, for example 5cm.
Preferably, when the first support layer comprises the titanium mesh, the titanium mesh may be circular. The titanium mesh may have a diameter of 4-7cm, for example 5cm or 6cm.
Preferably, when the second support layer includes the nickel mesh, the nickel mesh may be circular. The nickel mesh may have a diameter of 4-6cm, for example 5cm.
Preferably, when the second support layer comprises the titanium mesh, the titanium mesh may be circular. The titanium mesh may have a diameter of 4-7cm, for example 5cm or 6cm.
In a preferred embodiment of the present invention, the pressure-resistant membrane electrode sequentially comprises: 2 layers of nickel nets with the diameter of 5cm, the membrane electrode A and 2 layers of nickel nets with the diameter of 5cm.
In a preferred embodiment of the present invention, the pressure-resistant membrane electrode sequentially comprises: 1 layer of titanium net with the diameter of 6cm, 1 layer of nickel net with the diameter of 5cm, the membrane electrode A,1 layer of nickel net with the diameter of 5cm and 1 layer of titanium net with the diameter of 6cm.
In a preferred embodiment of the present invention, the pressure-resistant membrane electrode sequentially comprises: 1 layer of titanium net with the diameter of 5cm, 2 layers of nickel net with the diameter of 5cm, the membrane electrode A, 2 layers of nickel net with the diameter of 5cm and 1 layer of titanium net with the diameter of 5cm.
In a preferred embodiment of the present invention, the pressure-resistant membrane electrode sequentially comprises: 1 layer of titanium net with the diameter of 6cm, 2 layers of nickel net with the diameter of 5cm, the membrane electrode A, 2 layers of nickel net with the diameter of 5cm and 1 layer of titanium net with the diameter of 6cm.
In a preferred embodiment of the present invention, the pressure-resistant membrane electrode sequentially comprises: 2 layers of 100-mesh nickel net, carbon paper, a first catalyst layer, a perfluorinated sulfonic acid resin NEPEM Nafion membrane layer, a second catalyst layer, carbon paper and 2 layers of 100-mesh nickel net; the perfluorosulfonic acid resin NEPEM Nafion membrane can be in the model number of N-115.
In a preferred embodiment of the present invention, the pressure-resistant membrane electrode sequentially comprises: 1 layer of 40-60 mesh titanium net, 1 layer of 20 mesh nickel net, carbon paper, a first catalyst layer, a perfluorinated sulfonic acid resin NEPEM Nafion membrane layer, a second catalyst layer, carbon paper, 1 layer of 20 mesh nickel net and 1 layer of 40-60 mesh titanium net; the perfluorosulfonic acid resin NEPEM Nafion membrane can be in the model number of N-1110 or N-114.
In a preferred embodiment of the present invention, the pressure-resistant membrane electrode sequentially comprises: 1 layer of 80-mesh titanium net, 2 layers of 60-mesh nickel net, carbon paper, a first catalyst layer, a perfluorinated sulfonic acid resin NEPEM Nafion membrane layer, a second catalyst layer, carbon paper, 2 layers of 60-mesh nickel net and 1 layer of 80-mesh titanium net; the perfluorosulfonic acid resin NEPEM Nafion membrane can be of type N-117.
In a preferred embodiment of the present invention, the pressure-resistant membrane electrode sequentially comprises: 1 layer of 100-mesh titanium net, 2 layers of 40-100-mesh nickel net, "carbon paper or carbon cloth", a first catalyst layer, a perfluorinated sulfonic acid resin NEPEM Nafion membrane layer, a second catalyst layer, "carbon paper or carbon cloth", 2 layers of 40-100-mesh nickel net and 1 layer of 100-mesh titanium net; the perfluorosulfonic acid resin NEPEM Nafion membrane can be of type N-112 or N-117.
In a preferred embodiment of the present invention, the pressure-resistant membrane electrode sequentially comprises: 1 layer of 200 mesh titanium net, 2 layers of 20-100 mesh nickel net, "carbon paper or carbon cloth", a first catalyst layer, a Sustanion ion exchange membrane layer, a second catalyst layer, "carbon paper or carbon cloth", 2 layers of 20-100 mesh nickel net and 1 layer of 200 mesh titanium net; the Sustainion ion exchange membrane layer can be X37-50-gradeT.
In a preferred embodiment of the present invention, the method for preparing the pressure-resistant membrane electrode comprises the following steps:
(1) Preparing catalyst slurry according to the catalyst slurry proportion;
(2) Pouring the catalyst slurry prepared in the step (1) into a spray pen, and then slowly and uniformly spraying the catalyst slurry on two surfaces of an ion exchange membrane or two gas diffusion layers to form a catalyst layer, wherein the total amount of Pt/C catalyst loading capacity of the anode and the cathode is 0.25-1.02mg cm -2 ；
(3) Placing the prepared ion exchange membrane or gas diffusion layer with the catalyst layer at room temperature for airing, and volatilizing redundant isopropanol and ethanol solution;
(4) Cutting the diffusion layer according to the size of the catalyst layer, and pressing the diffusion layer, the ion exchange membrane and the diffusion layer into a three-in-one membrane electrode by using a hot press in the sequence of the diffusion layer, wherein the pressing conditions are as follows: setting the pressure at 2-4MPa and the temperature at 50-180 deg.C for 1-10min;
(5) And respectively adding supporting layers on two sides of the membrane electrode, and then compacting by using a roll squeezer to prepare the pressure-resistant membrane electrode with the pressure resistance.
In the following examples and comparative examples:
the catalyst layer slurry is a uniformly dispersed black ink-like solution prepared from 40mg of 40 mass percent Pt/C catalyst, 375 mu L of an Afion (DuPont D520, mass percent of 5%) solution, 6ml of isopropanol and 2ml of absolute ethyl alcohol; a Pt/C catalyst with a mass fraction of 40% was purchased from Shanghai Hesen electric Co., ltd.
Example 1
Pouring 6ml of catalyst slurry into a spray pen, slowly and uniformly spraying onto both sides of a nafion membrane (model number N-1110, thickness 254 μm, from DuPont) with diameter of 7cm to form a catalyst layer, wherein the spraying range is 5cm circle, each side is sprayed with 3ml of catalyst slurry, and the total loading of Pt/C catalysts on positive and negative electrodes is 0.76mg cm -2 . Then, the nafion membrane sprayed with the catalytic layer is placed at room temperature to be dried, and redundant isopropanol and ethanol solution are volatilized. Cutting two pieces of carbon paper with the diameter of 5cm, respectively placing the two pieces of carbon paper on the catalyst layers on the two sides of the nafion membrane, and pressing the two pieces of carbon paper for 2min at the temperature of 130 ℃ under the pressure of 4MPa by using a hot press to prepare the three-in-one membrane electrode. Cutting 2 nickel nets (20 meshes) with the diameter of 5cm and 2 titanium nets (40 meshes) with the diameter of 6cm according to the proportion of 1 titanium net (mesh)The membrane electrode with the compression resistance is prepared by compressing 40 meshes, 1 nickel net (20 meshes), 1 membrane electrode, 1 nickel net (20 meshes) and 1 titanium net (40 meshes) by a roll press in sequence. The prepared membrane electrode is stored in a constant temperature and humidity box with the temperature of 50 ℃ and the humidity of 90 percent for standby. The structure of the membrane electrode in this embodiment can be as shown in fig. 3, and it should be noted that the thicknesses of the layers shown in fig. 3 are only used for schematic reference.
The membrane electrode is arranged in a battery clamp, hydrogen is introduced into the air inlet end, 0.7V voltage is added into the two ends of the electrode slice, and the electrochemical performance and the compression resistance effect of the membrane electrode are tested. The results are shown in Table 1.
Example 2
Pouring 4ml of catalyst slurry into a spray pen, slowly and uniformly spraying the catalyst slurry on carbon paper with the diameter of 5cm, spraying 2ml of catalyst slurry on each piece of carbon paper, and spraying 2 pieces of catalyst slurry in total, wherein the total loading capacity of the Pt/C catalysts on the anode and the cathode is 0.51mg cm -2 . And then, the carbon paper sprayed with the catalytic layer is placed at room temperature for airing, and redundant isopropanol and ethanol solution are volatilized. Then the carbon paper sprayed with the catalyst layer is respectively placed on two sides of a nafion membrane (model is N-114, thickness is 102 mu m) with the diameter of 7cm, so that the catalyst layer is contacted with the nafion membrane and placed, and a hot press is used for pressing for 5min at 2MPa and 100 ℃ to prepare the three-in-one membrane electrode. Cutting 2 nickel nets (20 meshes) with the diameter of 5cm and 2 titanium nets (60 meshes) with the diameter of 6cm, and compacting by a roll squeezer according to the sequence of 1 titanium net, 1 nickel net, a membrane electrode, 1 nickel net and 1 titanium net to prepare the membrane electrode with the compression resistance. The prepared membrane electrode is stored in a constant temperature and humidity box with the temperature of 50 ℃ and the humidity of 90 percent for standby.
The membrane electrode is arranged in a battery clamp, hydrogen is introduced into the air inlet end, 0.7V voltage is added into the two ends of the electrode slice, and the electrochemical performance and the compression resistance effect of the membrane electrode are tested. The results are shown in Table 1.
Example 3
Pouring 4ml of catalyst slurry into a spray pen, then slowly and uniformly spraying the catalyst slurry on carbon paper with the diameter of 5cm, spraying 2ml of catalyst slurry on each piece of carbon paper, and spraying 2 pieces of catalyst slurry in total, wherein the total loading capacity of the Pt/C catalyst on the positive electrode and the negative electrode is 0.51 mg-cm -2 . Then, the catalyst layer is sprayedThe carbon paper is placed at room temperature for airing, and redundant isopropanol and ethanol solution are volatilized. Then the carbon paper coated with the catalyst layer is respectively placed on two sides of a nafion membrane (model is N-117, thickness is 183 mu m) with diameter of 7cm, so that the catalyst layer is contacted with the nafion membrane and placed, and a hot press is used for pressing for 2min at 4MPa and 130 ℃ to prepare the three-in-one membrane electrode. Cutting 4 nickel screens (40 meshes) with the diameter of 5cm and 2 titanium screens (100 meshes) with the diameter of 6cm, and compacting by a roll squeezer according to the sequence of 1 titanium screen, 2 nickel screens, a membrane electrode, 2 nickel screens and 1 titanium screen to prepare the membrane electrode with the compression resistance. The prepared membrane electrode is stored in a constant temperature and humidity box with the temperature of 30 ℃ and the humidity of 60% for standby.
The membrane electrode is arranged in a battery clamp, hydrogen is introduced into the air inlet end, 0.7V voltage is added into the two ends of the electrode slice, and the electrochemical performance and the compression resistance effect of the membrane electrode are tested. The results are shown in Table 1.
Example 4
Pouring 2ml of catalyst slurry into a spray pen, slowly and uniformly spraying onto two sides of a nafion membrane (model number is N-112, thickness is 51 μm) with diameter of 7cm to form a catalyst layer, wherein the spraying range is a circle with diameter of 5cm, 1ml of catalyst slurry is sprayed onto each side, and the total loading amount of Pt/C catalysts on the positive electrode and the negative electrode is 0.25mg cm -2 . Then, the nafion membrane sprayed with the catalytic layer is placed at room temperature for airing, and redundant isopropanol and ethanol solution are volatilized. Cutting two pieces of carbon cloth with the diameter of 5cm, respectively placing the two pieces of carbon cloth on the catalyst layers on the two sides of the nafion membrane, and pressing the two pieces of carbon cloth for 5min at the temperature of 50 ℃ under the pressure of 4MPa by using a hot press to prepare the three-in-one membrane electrode. Cutting 4 nickel nets (40 meshes) with the diameter of 5cm and 2 titanium nets (100 meshes) with the diameter of 6cm, and compacting by a roll squeezer according to the sequence of 1 titanium net, 2 nickel nets, a membrane electrode, 2 nickel nets and 1 titanium net to prepare the membrane electrode with the compression resistance. The prepared membrane electrode is stored in a constant temperature and humidity box with the temperature of 50 ℃ and the humidity of 90 percent for standby.
The membrane electrode is arranged in a battery clamp, hydrogen is introduced into the air inlet end, 0.7V voltage is added into the two ends of the electrode slice, and the electrochemical performance and the compression resistance effect of the membrane electrode are tested. The results are shown in Table 1.
Example 5
4ml of catalyst slurry was takenPouring into a spray pen, slowly and uniformly spraying onto both sides of a nafion membrane (model number is N-117, thickness is 183 μm) with diameter of 7cm to form a catalyst layer, wherein the spraying range is 5cm circle, each side is sprayed with 2ml catalyst slurry, and the total loading amount of Pt/C catalyst on positive and negative electrodes is 0.51mg cm -2 . Then, the nafion membrane sprayed with the catalytic layer is placed at room temperature for airing, and redundant isopropanol and ethanol solution are volatilized. Cutting two pieces of carbon paper with the diameter of 5cm, respectively placing the two pieces of carbon paper on the catalyst layers on the two sides of the nafion membrane, and pressing the two pieces of carbon paper for 2min at the temperature of 130 ℃ under the pressure of 4MPa by using a hot press to prepare the three-in-one membrane electrode. Cutting 4 nickel nets (100 meshes) with the diameter of 5cm and 2 titanium nets (100 meshes) with the diameter of 6cm, and compacting by a roll squeezer according to the sequence of 1 titanium net, 2 nickel nets, a membrane electrode, 2 nickel nets and 1 titanium net to prepare the membrane electrode with the compression resistance. The prepared membrane electrode is stored in a constant temperature and humidity box with the temperature of 50 ℃ and the humidity of 90 percent for standby.
The membrane electrode is arranged in a battery clamp, hydrogen is introduced into the air inlet end, 0.7V voltage is added into the two ends of the electrode slice, and the electrochemical performance and the compression resistance effect of the membrane electrode are tested. The results are shown in Table 1.
Example 6
Pouring 8ml of catalyst slurry into a spray pen, slowly and uniformly spraying two sides of a nafion membrane (model number is N-115, thickness is 127 mu m) with the diameter of 7cm to form a catalytic layer, wherein the spraying range is a circle with the diameter of 5cm, 4ml of catalyst slurry is sprayed on each side, and the total loading capacity of Pt/C catalysts on the anode and the cathode is 1.02mg cm -2 . Then, the nafion membrane sprayed with the catalytic layer is placed at room temperature to be dried, and redundant isopropanol and ethanol solution are volatilized. Cutting two pieces of carbon paper with the diameter of 5cm, respectively placing the two pieces of carbon paper on the catalyst layers on the two sides of the nafion membrane, and pressing the two pieces of carbon paper for 2min at the temperature of 130 ℃ under the pressure of 4MPa by using a hot press to prepare the three-in-one membrane electrode. Cutting 4 nickel nets (100 meshes) with the diameter of 5cm, and compacting by a roller press according to the sequence of 2 nickel nets, the membrane electrode and 2 nickel nets to prepare the membrane electrode with the compression resistance. The prepared membrane electrode is stored in a constant temperature and humidity box with the temperature of 50 ℃ and the humidity of 90 percent for standby.
The membrane electrode is arranged in a battery clamp, hydrogen is introduced into the air inlet end, 0.7V voltage is added into the two ends of the electrode slice, and the electrochemical performance and the compression resistance effect of the membrane electrode are tested. The results are shown in Table 1.
Example 7
Pouring 4ml of catalyst slurry into a spray pen, slowly and uniformly spraying the catalyst slurry on carbon cloth with the diameter of 5cm, spraying 2ml of catalyst slurry on each piece of carbon paper, and spraying 2 pieces of catalyst slurry in total, wherein the total loading capacity of the Pt/C catalysts on the anode and the cathode is 0.51mg cm -2 . And then, the carbon cloth sprayed with the catalytic layer is placed at room temperature for airing, and redundant isopropanol and ethanol solution are volatilized. Then, the carbon paper sprayed with the catalyst layer is respectively placed on two sides of a Sustation ion exchange membrane (model X37-50-gradeT) with the diameter of 7cm, so that the catalyst layer is contacted with the Sustation ion exchange membrane and placed, a hot press is used for pressing for 2min at the temperature of 4MPa and the temperature of 130 ℃ to prepare a three-in-one membrane electrode, 4 nickel nets (20 meshes) with the diameter of 5cm and 2 titanium nets (200 meshes) with the diameter of 5cm are cut, and the membrane electrode with the pressure resistance is prepared by pressing the carbon paper with the catalyst layer and the membrane electrode with the pressure resistance by a roller press according to the sequence of 1 titanium net, 2 nickel nets and 1 titanium net, and the prepared membrane electrode is stored in a constant temperature and humidity box with the temperature of 50 ℃ and the humidity of 90% for later use.
The membrane electrode is arranged in a battery clamp, hydrogen is introduced into the air inlet end, 0.7V voltage is added to the two ends of the electrode slice, and the electrochemical performance and the compression resistance effect of the membrane electrode are tested. The results are shown in Table 1.
Example 8
Pouring 4ml of catalyst slurry into a spray pen, slowly and uniformly spraying on a carbon cloth with the diameter of 5cm, spraying 4ml of catalyst slurry on each piece of carbon paper, and spraying 2 pieces of catalyst slurry, wherein the total loading capacity of the Pt/C catalysts on the positive electrode and the negative electrode is 0.51 mg-cm -2 . And then, the carbon cloth sprayed with the catalytic layer is placed at room temperature to be dried, and redundant isopropanol and ethanol solution are volatilized. Then, the carbon paper sprayed with the catalyst layer is respectively placed on two sides of a Sustanion ion exchange membrane (model X37-50-gradeT) with the diameter of 7cm, so that the catalyst layer is placed in contact with the Sustanion ion exchange membrane, and the membrane is pressed for 2min at 4MPa and 130 ℃ by using a hot press to prepare the three-in-one membrane electrode. Cutting 4 nickel nets (40 meshes) with the diameter of 5cm and 2 titanium nets (200 meshes) with the diameter of 6cm, and using rollers according to the sequence of 1 titanium net, 2 nickel nets, a membrane electrode, 2 nickel nets and 1 titanium netAnd (5) pressing by a press to prepare the membrane electrode with the pressure resistance. The prepared membrane electrode is stored in a constant temperature and humidity box with the temperature of 50 ℃ and the humidity of 90 percent for standby.
The membrane electrode is arranged in a battery clamp, hydrogen is introduced into the air inlet end, 0.7V voltage is added into the two ends of the electrode slice, and the electrochemical performance and the compression resistance effect of the membrane electrode are tested. The results are shown in Table 1.
Example 9
Pouring 4ml of catalyst slurry into a spray pen, slowly and uniformly spraying onto two sides of a Sustainion ion exchange membrane (model X37-50-gradeT) with a diameter of 7cm to form a catalyst layer, wherein the spraying range is a circle with a diameter of 5cm, 2ml of catalyst slurry is sprayed onto each side, and the total loading capacity of Pt/C catalysts on the positive electrode and the negative electrode is 0.51mg cm -2 . Then, the nafion membrane sprayed with the catalytic layer is placed at room temperature to be dried, and redundant isopropanol and ethanol solution are volatilized. Cutting two pieces of carbon paper with the diameter of 5cm, respectively placing the two pieces of carbon paper on the catalyst layers on the two sides of the nafion membrane, and pressing the two pieces of carbon paper for 2min at the temperature of 130 ℃ under the pressure of 4MPa by using a hot press to prepare the three-in-one membrane electrode. Cutting 4 nickel screens (100 meshes) with the diameter of 5cm and 2 titanium screens (200 meshes) with the diameter of 6cm, and compacting by a roll squeezer according to the sequence of 1 titanium screen, 2 nickel screens, a membrane electrode, 2 nickel screens and 1 titanium screen to prepare the membrane electrode with the compression resistance. The prepared membrane electrode is stored in a constant temperature and humidity box with the temperature of 50 ℃ and the humidity of 90 percent for standby.
The membrane electrode is arranged in a battery clamp, hydrogen is introduced into the air inlet end, 0.7V voltage is added to the two ends of the electrode slice, and the electrochemical performance and the compression resistance effect of the membrane electrode are tested. The results are shown in Table 1.
Example 10
Pouring 4ml of catalyst slurry into a spray pen, slowly and uniformly spraying two sides of a nafion membrane (model number is N-117, thickness is 183 mu m) with the diameter of 7cm to form a catalytic layer, wherein the spraying range is a circle with the diameter of 5cm, 2ml of catalyst slurry is sprayed on each side, and the total loading capacity of Pt/C catalysts on the positive electrode and the negative electrode is 0.51mg cm -2 . Then, the nafion membrane sprayed with the catalytic layer is placed at room temperature to be dried, and redundant isopropanol and ethanol solution are volatilized. Cutting two pieces of carbon paper with diameter of 5cm, respectively placing on the catalysis of two sides of nafion membraneAnd pressing the mixture layer for 2min at 4MPa and 130 ℃ by using a hot press to prepare the three-in-one membrane electrode. Cutting 4 nickel screens (60 meshes) with the diameter of 5cm and 2 titanium screens (80 meshes) with the diameter of 5cm, and compacting by a roll squeezer according to the sequence of 1 titanium screen, 2 nickel screens, a membrane electrode, 2 nickel screens and 1 titanium screen to prepare the membrane electrode with the compression resistance. The prepared membrane electrode is stored in a constant temperature and humidity box with the temperature of 50 ℃ and the humidity of 90 percent for standby.
The membrane electrode is arranged in a battery clamp, hydrogen is introduced into the air inlet end, 0.7V voltage is added into the two ends of the electrode slice, and the electrochemical performance and the compression resistance effect of the membrane electrode are tested. The results are shown in Table 1.
Comparative example
Pouring 4ml of catalyst slurry into a spray pen, slowly and uniformly spraying two sides of a nafion membrane (model number is N-117, thickness is 183 mu m) with the diameter of 7cm to form a catalytic layer, wherein the spraying range is a circle with the diameter of 5cm, 2ml of catalyst slurry is sprayed on each side, and the total loading capacity of Pt/C catalysts on the positive electrode and the negative electrode is 0.51mg cm -2 . Then, the nafion membrane sprayed with the catalytic layer is placed at room temperature for airing, and redundant isopropanol and ethanol solution are volatilized. Cutting two pieces of carbon paper with the diameter of 5cm, respectively placing the two pieces of carbon paper on the catalyst layers on the two sides of the nafion membrane, and pressing the two pieces of carbon paper for 2min at the temperature of 130 ℃ and 4MPa by using a hot press to prepare the three-in-one membrane electrode. The prepared membrane electrode is stored in a constant temperature and humidity box with the temperature of 50 ℃ and the humidity of 90 percent for standby.
Effects of the embodiment
The membrane electrodes of examples 1 to 10 and the comparative example were mounted in cell clamps, respectively (the clamps consisted of two end plates and two electrode plates, and the inlet and outlet ports were on the two end plates), hydrogen gas (20 mL/min, inlet pressure 0.5 MPa) was introduced into the inlet port, and 0.7V voltage was applied to the two ends of the electrode plate, to test their electrochemical properties and compressive properties.
Specific performance data is shown in table 1, fig. 1 and fig. 2.
TABLE 1 electrochemical Performance testing of Membrane electrodes for Hydrogen compression
Note: 1: is the maximum current density within 0-140min, wherein the unit of the current density is mA cm -2 (ii) a 2: the maximum pressure of the hydrogen gas is 0-120 min, the unit of the gas outlet pressure is MPa, and the pressure of the hydrogen gas at the hydrogen production side is shown.
As can be seen from table 1, fig. 1 and fig. 2, under the condition that the amount of catalyst, the type of membrane and the thickness are comparable, example 5 achieves effective increase of current density and significant increase of gas outlet pressure compared to the comparative example.
Moreover, after the current density and voltage resistance tests, the appearance of the membrane electrode of the embodiment 5 has no obvious change compared with the membrane electrode before the tests; after the current density and voltage withstand test, the membrane electrode of the comparative example was significantly damaged as compared with the membrane electrode before the test.
Claims (10)
1. A pressure-resistant membrane electrode is characterized by comprising a first supporting layer, a membrane electrode A and a second supporting layer in sequence, wherein the membrane electrode A comprises a first gas diffusion layer, a first catalyst layer, an ion exchange membrane layer, a second catalyst layer and a second gas diffusion layer in sequence;
the first support layer and the second support layer have a microporous structure;
the mesh number of the microporous structure in the first supporting layer is more than or equal to 20 meshes;
the mesh number of the microporous structure in the second supporting layer is more than or equal to 20 meshes.
2. The membrane electrode assembly according to claim 1, wherein the support material in the first and/or second support layer is a metal;
the first gas diffusion layer is a carbon paper layer, a carbon cloth layer or a polytetrafluoroethylene film layer;
the second gas diffusion layer is a carbon paper layer, a carbon cloth layer or a polytetrafluoroethylene film layer;
the catalyst in the first catalyst layer and the second catalyst layer is a platinum carbon catalyst;
and/or the ion exchange membrane in the ion exchange membrane layer is a perfluorinated sulfonic acid resin membrane, a hydrocarbon ion exchange membrane or an imidazole functionalized styrene and chloroethylene-based polymer membrane.
3. The pressure-resistant membrane electrode assembly according to claim 1 or 2, wherein the first support layer and/or the second support layer is a titanium mesh and/or a nickel mesh.
4. The pressure-resistant membrane electrode assembly according to claim 1, wherein the mesh number of the microporous structure in the first support layer is 20-200 mesh;
and/or the mesh number of the micropore structures in the second support layer is 20-200 meshes.
5. The membrane electrode assembly according to claim 3, wherein when the first support layer comprises a nickel mesh, the mesh number of the nickel mesh is 20 to 100;
and/or when the first support layer comprises the titanium mesh, the mesh number of the titanium mesh is 40-200 meshes.
6. The membrane electrode assembly according to claim 3, wherein when the second support layer comprises a nickel mesh, the mesh number of the nickel mesh is 20 to 100;
and/or when the second support layer comprises the titanium mesh, the mesh number of the titanium mesh is 40-200 meshes.
7. The compressive membrane electrode of claim 3, wherein said first support layer is a 100 mesh nickel mesh;
or the first support layer is a 40-60 mesh titanium mesh and a 20 mesh nickel mesh;
or the first supporting layer is a titanium net with 80-200 meshes and a nickel net with 20-100 meshes.
8. The pressure resistant membrane electrode of claim 3 wherein said second support layer is a 100 mesh nickel mesh;
or the second support layer is a 40-60 mesh titanium mesh and a 20 mesh nickel mesh;
or the second supporting layer is a titanium mesh with 80-200 meshes and a nickel mesh with 20-100 meshes.
9. The pressure-resistant membrane electrode assembly according to claim 3, wherein said pressure-resistant membrane electrode assembly comprises, in order: 2 layers of 100-mesh nickel net, carbon paper, a first catalyst layer, a perfluorinated sulfonic acid resin NEPEM Nafion membrane layer, a second catalyst layer, carbon paper and 2 layers of 100-mesh nickel net;
or, the pressure-resistant membrane electrode sequentially comprises: 1 layer of 40-60 mesh titanium net, 1 layer of 20 mesh nickel net, carbon paper, a first catalyst layer, a perfluorinated sulfonic acid resin NEPEM Nafion membrane layer, a second catalyst layer, carbon paper, 1 layer of 20 mesh nickel net and 1 layer of 40-60 mesh titanium net;
or, the pressure-resistant membrane electrode sequentially comprises: 1 layer of 80-mesh titanium net, 2 layers of 60-mesh nickel net, carbon paper, a first catalyst layer, a perfluorinated sulfonic acid resin NEPEM Nafion membrane layer, a second catalyst layer, carbon paper, 2 layers of 60-mesh nickel net and 1 layer of 80-mesh titanium net;
or, the pressure-resistant membrane electrode sequentially comprises: 1 layer of 100-mesh titanium net, 2 layers of 40-100-mesh nickel net, "carbon paper or carbon cloth", a first catalyst layer, a perfluorinated sulfonic acid resin NEPEM Nafion membrane layer, a second catalyst layer, "carbon paper or carbon cloth", 2 layers of 40-100-mesh nickel net and 1 layer of 100-mesh titanium net;
or, the pressure-resistant membrane electrode sequentially comprises: 1 layer of 200 mesh titanium net, 2 layers of 20-100 mesh nickel net, "carbon paper or carbon cloth", a first catalyst layer, a Sustainion ion exchange membrane layer, a second catalyst layer, "carbon paper or carbon cloth", 2 layers of 20-100 mesh nickel net and 1 layer of 200 mesh titanium net.
10. An electrochemical hydrogen pump comprising the pressure-resistant membrane electrode of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221688431.8U CN218521345U (en) | 2022-07-01 | 2022-07-01 | Pressure-resistant membrane electrode and electrochemical hydrogen pump comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221688431.8U CN218521345U (en) | 2022-07-01 | 2022-07-01 | Pressure-resistant membrane electrode and electrochemical hydrogen pump comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218521345U true CN218521345U (en) | 2023-02-24 |
Family
ID=85237554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221688431.8U Active CN218521345U (en) | 2022-07-01 | 2022-07-01 | Pressure-resistant membrane electrode and electrochemical hydrogen pump comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218521345U (en) |
-
2022
- 2022-07-01 CN CN202221688431.8U patent/CN218521345U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113517449B (en) | Membrane electrode assembly and preparation method thereof | |
| US6723464B2 (en) | Membrane-electrode-assembly with solid polymer electrolyte | |
| AU2020101412A4 (en) | Direct methanol fuel cell membrane electrode for improving catalyst utilization and preparation method thereof | |
| JP4082999B2 (en) | Method for producing a membrane electrode assembly for a membrane fuel cell | |
| CA2488908C (en) | Method of making membrane electrode assemblies | |
| CN113013454B (en) | Fuel cell membrane electrode and preparation method thereof | |
| JP4859124B2 (en) | Membrane electrode unit, manufacturing method thereof, and direct methanol fuel cell | |
| US20230369626A1 (en) | Fabrication of membrane electrode assemblies and reversible electrochemical devices | |
| CN108539206A (en) | A kind of Catalytic Layer orderly fuel cell electrode and membrane electrode entirely | |
| CN111584880B (en) | Low-platinum proton exchange membrane fuel cell membrane electrode and preparation method thereof | |
| CN108448138A (en) | A kind of preparation method of Catalytic Layer full ordered structure fuel cell electrode and membrane electrode | |
| CN108878930A (en) | A kind of electrolysis optimization method of membrane electrode catalytic layer microstructure | |
| CA2640961A1 (en) | Method of making membrane electrode assemblies | |
| CN218521345U (en) | Pressure-resistant membrane electrode and electrochemical hydrogen pump comprising same | |
| CN101771150B (en) | Fuel cell membrane electrode with renewable function and preparation method thereof | |
| CN115029719A (en) | Compression-resistant membrane electrode, preparation method thereof and electrochemical hydrogen pump containing compression-resistant membrane electrode | |
| US9123963B2 (en) | Direct coated membrane electrode assembly on external reinforcement for fuel cells | |
| CN101771158B (en) | Long-life fuel cell membrane electrode and preparation method thereof | |
| CN210516886U (en) | Low Pt loading membrane electrode | |
| KR100682030B1 (en) | Production method of metal impregnated polymer electrolyte membrane using supercritical fluid and the polymer electrolyte membrane made by the method | |
| CA2668895A1 (en) | Electrocatalyst layers for fuel cells and methods of making electrocatalyst layers for fuel cells | |
| CN115029728B (en) | Catalyst slurry, preparation method and application thereof, and hydrogen electrochemical compressor | |
| Jamb et al. | Polymer electrolyte membrane fuel cells for sustainable energy production | |
| Basha et al. | Understanding Potential Decay during OCV Hold via Dry Recovery Process | |
| US20070111084A1 (en) | Methanol tolerant catalyst material containing membrane electrode assemblies and fuel cells prepared therewith |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |