CN113140768A - Cathode side structure of integrated reversible fuel cell membrane electrode - Google Patents
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1004—Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/8647—Inert electrodes with catalytic activity, e.g. for fuel cells consisting of more than one material, e.g. consisting of composites
- H01M4/8657—Inert electrodes with catalytic activity, e.g. for fuel cells consisting of more than one material, e.g. consisting of composites layered
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8803—Supports for the deposition of the catalytic active composition
- H01M4/8807—Gas diffusion layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
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- 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
Abstract
The invention relates to a cathode side structure of an integrated reversible fuel cell membrane electrode, which is arranged on one side of a cathode of an integrated reversible fuel cell and comprises a gas diffusion layer and a composite functional catalyst layer with hydrophilic and hydrophobic characteristics alternately at intervals; the gas diffusion layer comprises a gas diffusion supporting layer with alternate hydrophilic and hydrophobic characteristics and pore diameters larger than 25 mu m and a gas diffusion microporous layer with alternate hydrophilic and hydrophobic characteristics and pore diameters of 0.1-10 mu m. Compared with the prior art, the invention has the advantages of water and gas separation and positioning transmission at one side of the cathode of the membrane electrode, improves the water management and mass transfer efficiency of the cell, and ensures the high-performance output of the reversible fuel cell.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a cathode side structure of an integrated reversible fuel cell membrane electrode.
Background
Energy is the basis on which modern society relies on survival and development. With the continuous progress of human society, fossil fuels such as coal, petroleum and natural gas, which human beings rely on for survival, are gradually exhausted, and meanwhile, the consumption of the fossil fuels causes the problems of increasingly serious air pollution and accelerated global warming. Therefore, the development of new energy, the improvement of fuel utilization, and the search for clean energy technologies to replace fossil fuels such as petroleum have become worldwide problems that people must solve in this century. As a novel energy storage battery, the integrated renewable fuel cell URFC (unified renewable fuel cell) has the functions of power generation and electrolysis, and the specific energy can be as high as 400-1000Wh/kg, which is several times of the lightest high-energy rechargeable battery at present. The 'water' as the energy storage substance can be recycled, reactants and products are only converted among hydrogen, oxygen and water, and the energy storage system has the advantages of no self-discharge in use, no battery capacity limitation and the like, and is a novel efficient environment-friendly energy storage system.
The Membrane Electrode (MEA) is the core component of the URFC, is a place for generating electric energy by the electrochemical reaction of fuel, has the function of electrolyzing water to prepare hydrogen and oxygen, and directly determines the performance of the integrated reversible fuel cell by the performance, reliability and stability. The MEA cathode side of existing integrated reversible fuel cells typically consists of a cathode side gas diffusion layer, a cathode side catalytic layer, and a proton exchange membrane. When the integrated reversible fuel cell performs a Fuel Cell (FC) function, oxygen reacts on the dual-function catalytic layer through the gas diffusion layer: o is2+4H++4e-→2H2O, outputting electric energy to the outside, and storing the generated water; in performing the electrolysis cell (WE) function, water reacts on the cathode-side bifunctional catalytic layer via the gas diffusion layer: 2H2O-4e-→O2+4H+And under the condition of external electric energy, the stored water is electrolyzed into hydrogen and oxygen to be stored. From the function of the integrated reversible fuel cell, the cathode-side MEA distributes gas and discharges water when needed to satisfy FC, and distributes water and discharges water when WE need to satisfy FCThe reversible requirement of the generated oxygen is met. However, in both FC and WE modes, the reactants and products are in different phases and flow in opposite directions, which puts high demands on water management of the cathode MEA.
In order to prevent flooding, a traditional gas diffusion layer on the cathode side of the MEA usually adopts a hydrophobic structure, so that a catalytic layer cannot obtain a large amount of water supply in a WE mode; meanwhile, the traditional MEA structure can not effectively separate reactants from products, so that gas and water management is difficult to reach the standard, mass transfer of the reactants is insufficient, the URFC system is low in efficiency, and popularization and application of the integrated renewable fuel cell are severely restricted. At present, the research on the alternate structure of the integrated fuel cell MEA at home and abroad is blank. Among the patents related to the MEA structure and the manufacturing method, chinese patent CN102437347A discloses a locally hydrophilic gas diffusion layer, which can effectively remove water generated in the fuel cell stack through a simple process, thereby improving the performance of the fuel cell stack. The U.S. patent 20200131657A1 realizes the layered stacking of Pt particles and Ir in the catalyst layer by using a spraying process, and the diffusion layer adopts hydrophobic treatment, so that the performance of the integrated renewable fuel cell is improved. The Chinese invention patent CN112331858A develops a fuel cell with a catalyst in-situ grown on a microporous layer with an ordered structure, and because the catalyst layer is uniformly grown in the ordered microporous layer, the catalytic reaction area is increased, and the efficiency of the fuel cell is improved. Chinese patent CN103165904B provides a specific combination of redox and hydrolysis dual-effect catalysts for fuel cells, which facilitates the normal operation of bidirectional reversible cells. However, these solutions cannot realize the positioning and transmission of water and gas, and it is difficult to meet the water and gas management requirements of the integrated reversible fuel cell.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an integrated reversible fuel cell membrane electrode cathode side structure which can separate and position and transmit water and gas at one side of a membrane electrode cathode, improve the water management and mass transfer efficiency of a cell and ensure the high-performance output of a reversible fuel cell.
The purpose of the invention can be realized by the following technical scheme:
a cathode side structure of an integrated reversible fuel cell membrane electrode is arranged on one side of a cathode of an integrated reversible fuel cell and comprises a gas diffusion layer and a composite functional catalyst layer with hydrophilic and hydrophobic characteristics alternately at intervals;
the gas diffusion layer comprises a gas diffusion supporting layer with alternate hydrophilic and hydrophobic characteristics and pore diameters larger than 25 mu m and a gas diffusion microporous layer with alternate hydrophilic and hydrophobic characteristics and pore diameters of 0.1-10 mu m.
Further, the gas diffusion support layer comprises a hydrophobic support layer, a hydrophilic support layer and carbon paper; the hydrophobic support layer and the hydrophilic support layer are staggered and arranged in the carbon paper side by side.
The hydrophobic support layer and the hydrophilic support layer are staggered and arranged side by side in the carbon paper by a dip coating-radiation grafting method.
The reaction water of the electrolysis mode and the water generated in the power generation mode are more easily collected on the hydrophilic support layer, and thus the hydrophilic support layer is a main channel of water, and the hydrophobic support layer is a main channel of oxygen because oxygen is mainly transmitted through the hydrophobic support layer due to less water contained in the hydrophobic support layer.
Further, the gas diffusion microporous layer comprises a hydrophobic microporous layer and a hydrophilic microporous layer, and the hydrophobic microporous layer and the hydrophilic microporous layer are staggered and arranged on one side of the gas diffusion supporting layer.
The hydrophobic microporous layer is formed by coating uniformly mixed viscous porous hydrophobic slurry on the gas diffusion supporting layer, and the hydrophilic microporous layer is formed by coating uniformly mixed viscous porous hydrophilic slurry on the gas diffusion supporting layer at intervals.
Further, the hydrophobic microporous layer is positioned to correspond to the hydrophobic support layer, and the hydrophilic microporous layer is positioned to correspond to the hydrophilic support layer.
Further, the thickness ratio of the hydrophobic support layer, the hydrophilic support layer, the hydrophobic microporous layer and the hydrophilic microporous layer is (190-.
Further, the composite functional catalyst layer comprises the following components in sequence, staggered and side by side:
a power generation catalyst layer for catalyzing only an oxidation reaction of the fuel in the cell mode;
an electrolytic catalyst layer for electrolytic catalysis of water only;
the bifunctional catalyst layer can realize both power generation and electrolysis.
The preparation method of the composite functional catalyst layer is to uniformly mix corresponding catalyst slurry and then sequentially coat the catalyst slurry on the outer side of the gas diffusion layer.
Furthermore, the position of the electrolysis catalyst layer corresponds to the hydrophilic support layer of the gas diffusion layer and is specially used for electrolysis; the position of the power generation catalyst layer corresponds to the hydrophobic support layer of the gas diffusion layer. Is specially used for generating electricity.
Further, the bifunctional catalyst layer is located between the power generation catalyst layer and the electrolysis catalyst layer. The transition layer can be used for both power generation and electrolysis.
Further, the power generation catalyst layer comprises a power generation catalyst composed of Pt particles, and the electrolysis catalyst layer comprises IrOxAn electrolytic catalyst composed of particles, wherein the bifunctional catalyst layer comprises Pt and IrOxA bifunctional catalyst consisting of particles.
Further, the position of the power generation catalyst layer corresponds to a hydrophobic support layer, and the position of the electrolysis catalyst layer corresponds to a hydrophilic support layer.
Furthermore, the hydrophobicity can be obtained by soaking in a hydrophobic solution; the hydrophilicity can be obtained by soaking in a hydrophilic solution.
The invention realizes regional management and transition of power generation and electrolysis, and the electrolysis catalyst layer corresponds to the hydrophilic support layer of the gas diffusion layer and is specially used for electrolysis; the power generation catalyst layer corresponds to the hydrophobic support layer of the gas diffusion layer and is specially used for power generation; the bifunctional catalyst layer can be used as a transition layer for both power generation and electrolysis.
When the reversible fuel cell generates electricity, oxygen is diffused to the electricity generation-dual-function catalyst layer, namely, the electricity generation catalyst layer and the dual-function catalyst layer react, generated water is firstly gathered at the hydrophilic microporous layer, then gathered at the hydrophilic support layer, and then gathered at the polar plate microchannel, enters the main channel of electrolyzed water and is discharged;
when the reversible fuel cell is electrolyzed, water is gathered from the cathode plate electrolyzed water main flow channel to the hydrophilic support layer and then mainly distributed to the electrolysis-double-function catalyst layer, namely the electrolysis catalyst layer and the double-function catalyst layer are used for electrolyzing to generate oxygen, and the generated oxygen is diffused to the cathode main flow channel of the cathode plate through the hydrophobic support layer.
The hydrophilic-hydrophobic alternate structure realizes the water-gas separation of the integrated reversible fuel cell in two modes of power generation and electrolysis, the catalyst layer structure with the composite function realizes the special area special purpose of the power generation and electrolysis modes, the performance of the integrated reversible fuel cell is improved, and the service life of the integrated reversible fuel cell is prolonged.
Compared with the prior art, the invention designs the gas diffusion layer structure with alternate hydrophilic and hydrophobic characteristics and the corresponding catalyst layer structure thereof, so that the separation and the positioning transmission of water and gas at one side of the cathode of the membrane electrode are realized in two working modes of power generation and electrolysis, the water management and mass transfer efficiency of the cell are improved, and the high-performance output of the reversible fuel cell is ensured.
Drawings
FIG. 1 is a schematic diagram of a cathode-side membrane electrode structure in an embodiment;
FIG. 2 is a schematic view of a gas diffusion layer in an example;
FIG. 3 is a schematic diagram of the structure of the composite multifunctional catalytic layer in the example;
FIG. 4 is a functional schematic diagram of the cathode-side membrane electrode in the power generation mode of the reversible fuel cell in the example;
FIG. 5 is a functional schematic diagram of cathode side membrane electrodes in the electrolysis mode of the reversible fuel cell in an embodiment;
the reference numbers in the figures indicate: a hydrophobic support layer 1, a hydrophilic support layer 2, a hydrophobic microporous layer 3, a hydrophilic microporous layer 4, a power generation catalyst layer 5, an electrolysis catalyst layer 6, and a bifunctional catalyst layer 7.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
A cathode side structure of an integrated reversible fuel cell membrane electrode is arranged on one side of a cathode of an integrated reversible fuel cell and comprises a gas diffusion layer and a composite functional catalyst layer with hydrophilic and hydrophobic characteristics alternately at intervals;
the gas diffusion layer comprises a gas diffusion supporting layer with alternate hydrophilic and hydrophobic characteristics and pore diameters larger than 25 mu m and a gas diffusion microporous layer with alternate hydrophilic and hydrophobic characteristics and pore diameters of 0.1-10 mu m.
The gas diffusion supporting layer comprises a hydrophobic supporting layer 1, a hydrophilic supporting layer 2 and carbon paper; the hydrophobic support layer 1 and the hydrophilic support layer 2 are staggered and arranged in the carbon paper. The hydrophobic support layer 1 and the hydrophilic support layer 2 are staggered side by side in the carbon paper by the "dip coating-radiation grafting" method.
The gas diffusion microporous layer comprises a hydrophobic microporous layer 3 and a hydrophilic microporous layer 4, wherein the hydrophobic microporous layer 3 and the hydrophilic microporous layer 4 are staggered and arranged on one side of the gas diffusion supporting layer. The hydrophobic microporous layer 3 is formed by applying a uniformly mixed viscous porous hydrophobic slurry on the gas diffusion support layer, and the hydrophilic microporous layer 4 is formed by applying a uniformly mixed viscous porous hydrophilic slurry on the gas diffusion support layer at intervals.
The hydrophobic microporous layer 3 is positioned to correspond to the hydrophobic support layer 1, and the hydrophilic microporous layer 4 is positioned to correspond to the hydrophilic support layer 2. The thickness ratio of the hydrophobic support layer 1, the hydrophilic support layer 2, the hydrophobic microporous layer 3 and the hydrophilic microporous layer 4 is (190) 210: (190) 210: 38-42.
The composite functional catalyst layer comprises the following components in sequence, in a staggered and side-by-side mode: a power generation catalyst layer 5 for catalyzing only an oxidation reaction of the fuel in the cell mode; an electrolytic catalyst layer 6 for electrolytic catalysis of water only; the bifunctional catalyst layer 7 can perform both power generation and electrolysis. The preparation method of the composite functional catalyst layer is to uniformly mix corresponding catalyst slurry and then sequentially coat the catalyst slurry on the outer side of the gas diffusion layer.
The position of the electrolytic catalyst layer 6 corresponds to the hydrophilic support layer 2 of the gas diffusion layer and is specially used for electrolysis; the position of the electricity generating catalyst layer 5 corresponds to the hydrophobic support layer 1 of the gas diffusion layer. Is specially used for generating electricity. The bifunctional catalyst layer 7 is located between the power generation catalyst layer 5 and the electrolysis catalyst layer 6. The transition layer can be used for both power generation and electrolysis. The power generation catalyst layer 5 includes a power generation catalyst composed of Pt particles, and the electrolysis catalyst layer 6 includes IrOxAn electrolytic catalyst composed of particles, wherein the bifunctional catalyst layer 7 comprises Pt and IrOxA bifunctional catalyst consisting of particles. The power generation catalyst layer 5 is positioned to correspond to the hydrophobic support layer 1, and the electrolysis catalyst layer 6 is positioned to correspond to the hydrophilic support layer 2.
Example 1
An integrated membrane electrode cathode structure with alternate hydrophilic and hydrophobic characteristics of a reversible fuel cell, as shown in figure 1, comprises carbon paper, a hydrophobic support layer 1 and a hydrophilic support layer 2 which are alternate with each other, a hydrophobic microporous layer 3 and a hydrophilic microporous layer 4 which are alternate with each other, and a composite multifunctional catalytic layer.
As shown in fig. 2, the gas diffusion support is distributed in the carbon paper at intervals and the gas diffusion microporous layer is distributed at intervals and in the carbon paper at one side of the gas diffusion support by the method of "dip coating-radiation grafting". The composite functional catalyst layer is sprayed on the gas diffusion microporous layer. The hydrophobic support layer 1 and the hydrophobic microporous layer 3 are main transmission channels for oxygen in two modes of power generation and electrolysis, and the hydrophilic support layer 2 and the hydrophilic microporous layer 4 are main transmission channels for water in two modes. The bifunctional catalyst layer 7 can perform both power generation and electrolysis, while the electrolysis catalyst layer 6 is used only for the electrolysis catalysis of water, and the power generation catalyst layer 5 is used only for the catalysis of the oxidation reaction in the battery mode.
Specifically, in the present embodiment, the cathode only has the localized transmission of oxygen and water, and the hydrophobic support layer 1, which is the main channel of oxygen, is obtained by impregnating and sintering slurry mixed by hydrophobic solution Polytetrafluoroethylene (PTFE); the hydrophobic microporous layer 3 is obtained by spraying slurry mixed by hydrophobic solution Polytetrafluoroethylene (PTFE) on one side of the carbon paper at intervals. The hydrophilic support layer 2 of the main channel of water is obtained by radiating on the corresponding hydrophilic area, grafting slurry mixed by hydrophilic materials such as Polyacrylonitrile (PAN) and the like, and then sintering; the hydrophilic microporous layer 4 is obtained by spraying a slurry mixed with hydrophilic Polyacrylonitrile (PAN) solution at intervals on one side of the gas diffusion support.
In this embodiment, each structure has a rectangular cross section, the thickness of the hydrophilic support layer 2 is about 40 micrometers, the thickness of the hydrophobic support layer 1 is about 40 micrometers, and the thicknesses of the hydrophobic microporous layer 3 and the hydrophilic microporous layer 4 are about 200 micrometers.
The hydrophobic support layer 1 and the hydrophilic support layer 2 are distributed in the carbon paper in a staggered and side-by-side mode, reaction water in an electrolysis mode and water generated in a power generation mode are more easily gathered on the hydrophilic support layer 2, and therefore, the hydrophilic support layer 2 is a main channel of water; since the hydrophobic support layer 1 contains less water, oxygen is mainly transported through the hydrophobic support layer 1, and thus the hydrophobic support layer 1 is a main channel of oxygen.
Specifically, the composite functional catalytic layer structure in this example comprises the following three catalyst components: power generation catalyst layer 5 composed of Pt particles, Pt, IrOx Bifunctional catalyst layer 7 consisting of particles and IrOxAn electrolytic catalyst layer 6 composed of particles. The composite functional catalyst layer is prepared by uniformly mixing corresponding catalyst slurry and then spraying the mixture on the gas diffusion microporous layer in sequence.
The embodiment can realize regional management and transition of power generation and electrolysis, and the electrolysis catalyst layer 6 corresponds to the hydrophilic support layer 2 of the gas diffusion layer and is specially used for electrolysis; the power generation catalyst layer 5 corresponds to the hydrophobic support layer 1 of the gas diffusion layer and is dedicated to power generation; the bifunctional catalyst layer 7 can generate electricity or can perform electrolysis as a transition layer.
The working process of the invention is as follows: the operating principle of the cathode side of the MEA is shown in figures 4 and 5.
Fig. 4 is a schematic diagram showing a power generation mode in which, during power generation of the fuel cell, oxygen enters the catalytic layer through the hydrophobic support layer 1, and reacts with the power generation catalytic layer 5 and the bifunctional catalytic layer 7, and generated water is transported out through the hydrophilic support layer 2;
fig. 5 is a schematic diagram of an electrolysis mode, when the fuel cell is electrolyzed, reaction water is mainly transmitted to the catalyst layer through the hydrophilic support layer 2, hydrolysis reaction occurs between the electrolysis catalyst layer 6 and the bifunctional catalyst layer 7, and generated oxygen is mainly transmitted through the hydrophobic support layer 1, so that the positioning, separation and transmission of water vapor are realized.
The invention realizes the positioning, separation and transmission of water and gas in two working modes of power generation and electrolysis, improves the water management and mass transfer efficiency of the cell, and ensures the high-performance output of the integrated reversible fuel cell.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (10)
1. A cathode side structure of an integrated reversible fuel cell membrane electrode is arranged on one side of a cathode of an integrated reversible fuel cell and is characterized by comprising a gas diffusion layer and a composite functional catalyst layer with hydrophilic and hydrophobic characteristics alternately at intervals;
the gas diffusion layer comprises a gas diffusion supporting layer with alternate hydrophilic and hydrophobic characteristics and a gas diffusion microporous layer with alternate hydrophilic and hydrophobic characteristics.
2. The membrane electrode cathode side structure of an integrated reversible fuel cell according to claim 1, characterized in that said gas diffusion support layer comprises a hydrophobic support layer (1), a hydrophilic support layer (2) and carbon paper; the hydrophobic support layer (1) and the hydrophilic support layer (2) are staggered and arranged in the carbon paper side by side.
3. The membrane electrode cathode side structure of an integrated reversible fuel cell according to claim 2, characterized in that said gas diffusion microporous layer comprises a hydrophobic microporous layer (3) and a hydrophilic microporous layer (4), said hydrophobic microporous layer (3) and hydrophilic microporous layer (4) being staggered and juxtaposed on one side of the gas diffusion support layer.
4. The cathode-side structure of the membrane electrode of an integrated reversible fuel cell according to claim 3, characterized in that the hydrophobic microporous layer (3) is positioned corresponding to the hydrophobic support layer (1) and the hydrophilic microporous layer (4) is positioned corresponding to the hydrophilic support layer (2).
5. The cathode side structure of the membrane electrode of the integrated reversible fuel cell as claimed in claim 3, wherein the thickness ratio of the hydrophobic support layer (1), the hydrophilic support layer (2), the hydrophobic microporous layer (3) and the hydrophilic microporous layer (4) is (190) 210: (38-42): (38-42).
6. The membrane electrode cathode side structure of an integrated reversible fuel cell according to claim 2, characterized in that said composite functional catalyst layer comprises, in sequence, alternately side by side:
a power generation catalyst layer (5) for catalyzing only an oxidation reaction of the fuel in the cell mode;
an electrolytic catalyst layer (6) for electrolytic catalysis of water only;
the bifunctional catalyst layer (7) can realize both power generation and electrolysis.
7. The membrane electrode cathode side structure of an integrated reversible fuel cell according to claim 6, characterized in that the position of the electrolytic catalyst layer (6) corresponds to the hydrophilic support layer (2) of the gas diffusion layer; the position of the power generation catalyst layer (5) corresponds to the hydrophobic support layer (1) of the gas diffusion layer.
8. The membrane electrode cathode side structure of an integrated reversible fuel cell according to claim 6, characterized in that said bifunctional catalyst layer (7) is located between the power generation catalyst layer (5) and the electrolysis catalyst layer (6).
9. The membrane electrode cathode side structure of one-piece reversible fuel cell according to claim 6, wherein said power generation catalyst layer (5) comprises power generation catalyst comprising Pt particles, and said electrolysis catalyst layer (6) comprises IrOxAn electrolytic catalyst composed of particles, wherein the bifunctional catalyst layer (7) comprises Pt and IrOxA bifunctional catalyst consisting of particles.
10. The membrane electrode cathode side structure of an integrated reversible fuel cell according to claim 6, characterized in that the position of said electricity generation catalyst layer (5) corresponds to a hydrophobic support layer (1), and the position of said electrolysis catalyst layer (6) corresponds to a hydrophilic support layer (2).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114430050A (en) * | 2022-01-18 | 2022-05-03 | 山东仁丰特种材料股份有限公司 | Gas diffusion layer for high-performance hydrogen fuel cell and preparation method thereof |
| CN116565223A (en) * | 2023-05-29 | 2023-08-08 | 上海氢晨新能源科技有限公司 | Electrode catalyst layer, membrane electrode for fuel cell, and fuel cell |
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| CN110311144A (en) * | 2019-06-26 | 2019-10-08 | 一汽解放汽车有限公司 | A kind of anode gas diffusion layer and preparation method thereof extending the metal double polar plates service life |
| CN110614742A (en) * | 2019-09-23 | 2019-12-27 | 天津大学 | Microporous layer with surface hydrophilic and hydrophobic characteristics alternately distributed, mold and preparation method thereof |
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| CN112382767A (en) * | 2020-10-26 | 2021-02-19 | 江苏大学 | Fuel cell electrode in-situ preparation method based on double-layer ordered structure microporous layer |
| CN112331858A (en) * | 2020-10-30 | 2021-02-05 | 江苏大学 | Fuel cell electrode with catalyst in-situ grown on ordered structure microporous layer and preparation method of membrane electrode |
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| CN113839050A (en) * | 2021-09-22 | 2021-12-24 | 爱德曼氢能源装备有限公司 | High-performance cathode catalyst layer of fuel cell and manufacturing process thereof |
| CN114430050A (en) * | 2022-01-18 | 2022-05-03 | 山东仁丰特种材料股份有限公司 | Gas diffusion layer for high-performance hydrogen fuel cell and preparation method thereof |
| CN114430050B (en) * | 2022-01-18 | 2023-10-24 | 山东仁丰特种材料股份有限公司 | Gas diffusion layer for high-performance hydrogen fuel cell and preparation method thereof |
| CN116565223A (en) * | 2023-05-29 | 2023-08-08 | 上海氢晨新能源科技有限公司 | Electrode catalyst layer, membrane electrode for fuel cell, and fuel cell |
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