CN102496726B - Preparation method and forming fixture of membrane electrode of proton exchange membrane fuel cell - Google Patents
Preparation method and forming fixture of membrane electrode of proton exchange membrane fuel cell Download PDFInfo
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- CN102496726B CN102496726B CN201110427036.4A CN201110427036A CN102496726B CN 102496726 B CN102496726 B CN 102496726B CN 201110427036 A CN201110427036 A CN 201110427036A CN 102496726 B CN102496726 B CN 102496726B
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- catalyst
- layer
- membrane electrode
- proton exchange
- anode
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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 provides a preparation method and forming fixture of a membrane electrode of a proton exchange membrane fuel cell. The preparation method comprises the following steps of: sequentially stacking a catalyst cathode layer, a proton exchange membrane layer and a catalyst cathode layer between two flat plates which are placed in parallel, wherein the flat plates are provided with screw holes and are connected through a bolt; setting the torque as 0.5-5 N m, and compacting the two flat plates and fixing the relative positions; heating the fixed two flat plates as well as the catalyst cathode layer, proton exchange membrane layer and catalyst cathode layer between the two flat plates at 140-300 DEG C for 2-30 min before taking out; and removing the flat plates to obtain the membrane electrode of the proton exchange membrane fuel cell. Experiment proves that: the membrane electrode prepared by the method has relatively excellent discharge performance, and the preparation technology is easy to operate and does not need a relatively expensive high-precision mould press. Therefore, the preparation of the membrane electrode using the method is easy to operate, the cost is low, and the electrochemical performance of the membrane electrode is excellent.
Description
Technical field
The present invention relates to fuel cell field, particularly a kind of preparation method of membrane electrode of fuel batter with proton exchange film and membrane electrode of fuel batter with proton exchange film shaping jig.
Background technology
Fuel cell is a kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT) that by electrochemical reaction, chemical energy is converted into electric energy, is proposed first by Gove in 1839.With respect to traditional energy conversion system, fuel cell has plurality of advantages: first, it is not subject to the restriction of Carnot cycle, and energy conversion efficiency is high; Secondly, product is generally water, and environmental pollution is little.Efficient and the free of contamination characteristic of fuel cell makes it receive in recent years increasing concern.
Proton Exchange Membrane Fuel Cells (proton exchange membrane fuel cell, PEMFC) be the important fuel cell of a class, it is the device that the fuel such as methyl alcohol, hydrogen, formic acid are generated electricity by a kind of membrane electrode being made up of amberplex and catalyst electrode.1), hydrogen arrives anode by pipeline or aeroscopic plate wherein the operation principle of hydrogen-oxygen proton exchange membrane fuel cell is as follows:; 2), under the effect of anode catalyst, 1 hydrogen molecule is dissociated into 2 hydrogen protons, and discharges 2 electronics, electronics forms electric current at external circuit; 3), at the other end of battery, oxygen arrives negative electrode by pipeline or aeroscopic plate, under the effect of cathod catalyst, oxygen molecule and hydrogen ion and by the electronics that external circuit the arrives negative electrode generation water that reacts.Reaction equation is as follows:
Anode reaction: H
2→ 2H
++ 2e
Cathode reaction: 1/2O
2+ 2H
++ 2e → H
2o
Overall reaction is: H
2+ 1/2O
2→ H
2o
Proton Exchange Membrane Fuel Cells has plurality of advantages, concrete as: Efficient Conversion, low-carbon environment-friendly etc., development in recent years is rapid.
Membrane electrode is one of core component of Proton Exchange Membrane Fuel Cells, and membrane electrode body comprises and setting gradually: anode diffusion layer, anode catalyst layer, proton exchange membrane, cathode catalysis layer and cathode diffusion layer.Existing membrane electrode is prepared as follows conventionally: prepare anode catalyst layer and cathode catalyst layer at anode diffusion layer and cathode diffusion layer surface first respectively, obtain catalyst anode layer and catalyst cathode layer; Then amberplex is placed between catalyst anode layer and catalyst cathode layer, and uses hot-press method by its consolidation, obtain film electrode composite element.On this basis, in order to improve the chemical property of fuel cell, prior art is started with from aspects such as the improvement of structure, catalyst and the amberplex of membrane electrode and is provided multiple and improve one's methods, concrete as:
Application number is that 200710144386.3 Chinese patent discloses a kind of self-respiration type fuel battery membrane electrode, and it is that netted porous metals collector and cathode catalysis layer are made after one molded each component heat.Adopt the mode of this interior afflux to reduce the resistance of self-respiration type fuel battery membrane electrode, improved the performance of membrane electrode.
Application number is the manufacture method that interior 01801938.2 Chinese patent discloses a kind of membrane-electrode assembly, this patent by being coated with the first Catalytic Layer on base film, be coated with coating fluid ion exchange resin being dissolved or dispersed in liquid and form thereon, form amberplex, then, coating thereon, containing the coating fluid of catalyst, forms the second catalyst layer, finally base film is peeled off, obtained membrane electrode assembly.Adopt the method, can high efficiency and manufacture continuously the membrane electrode of the uniform high performance use in solid polymer fuel cell of catalyst layer thickness.
Application number is that 99815574.8 Chinese patent discloses the combination of a kind of electrode for fuel cell-film, and it deposits approximately 3 dusts by electro beam physics vapor deposition process and has improved power stage to the noble metal catalyst of 475 dust thickness on film.
A kind of catalyst coated membrane (CCM) is provided in the Chinese patent that application number is 200710001423.5, this catalyst coated membrane comprises anode catalyst layer, wherein comprises by non-catalyst-loaded the first catalyst layer forming with by catalyst-loaded the second catalyst layer forming; Cathode catalyst layer is to be made up of catalyst-loaded.This method can reduce the interface resistance between electrode and dielectric film, reduces the use amount of catalyst, and reduces the thickness deviation in electrode layer.Adopt the fuel cell of this MEA to there is catalyst-loaded maximum activity, and improved battery performance as output voltage, output density, efficiency etc.
Application number is that 200680017344.7 Chinese patent discloses a kind of membrane-electrode assembly, and it is filled high polymer electrolyte in porous substrate, forms dielectric film, at its both sides configuration catalyst electrode.Meanwhile, in the one side contacting with dielectric film at catalyst layer, the content of polyelectrolyte is more than the other parts of catalyst layer.
The Chinese patent of 200810046956.X discloses a kind of calalyst layer of fuel cell based on porous matrix, membrane electrode and preparation method thereof, dry heat after Porous proton exchange impregnated catalyst slip is pressed into Catalytic Layer by it, scribble again the carbon paper hot pressing of microporous layers or water management layer with surface, and then obtain membrane electrode with proton exchange membrane hot pressing.
Application number is that 200310102638.8 Chinese patent discloses a kind of film electrode structure for Proton Exchange Membrane Fuel Cells and preparation method thereof, it has adopted a kind of Catalytic Layer, and it forms by covering the hydrophilic Catalytic Layer on film surface and the composite double layer of layer hydrophobic catalyst.Kind electrode structure, is conducive to positive C O
2discharge and negative electrode O
2diffusion and water are discharged, and have reduced mass transfer polarization loss, have increased limiting current density, have improved electrode performance and noble metal catalyst utilance.
Application number is the manufacture method that 200980106031.2 Chinese patent discloses a kind of solid polymer type dye cell membrane-electrode assembly, gas diffusion layers made by the carbon fiber that contains fiber footpath 1 μ m～50 μ m and the mixture of proton-conducting polymer by it, obtained good effect.
Though said method can make the chemical property of Proton Exchange Membrane Fuel Cells increase, complex operation mostly, or introduce the molding apparatus that price is comparatively expensive.Improve thus the production cost of Proton Exchange Membrane Fuel Cells.
Summary of the invention
The technical problem that the present invention solves is to provide a kind of preparation method and membrane electrode of fuel batter with proton exchange film shaping jig of membrane electrode of fuel batter with proton exchange film.Use said method to prepare membrane electrode easy and simple to handle, need not introduce expensive molding apparatus, chemical property excellence.
In view of this, the invention provides a kind of preparation method of membrane electrode of fuel batter with proton exchange film, comprising:
Catalyst anode layer, proton exchange rete and catalyst cathode layer are stacked in successively between two flat boards of parallel placement; Described flat board is provided with screw, and described two flat boards are connected by bolt; It is 0.5Nm～5Nm that moment of torsion is set, fixing relative position after two flat boards are compressed; Described catalyst anode layer comprises anode diffusion layer and is overlying on the anode catalyst layer on described anode diffusion layer surface; Described catalyst cathode layer comprises cathode diffusion layer and is overlying on the cathode catalyst layer on described anode diffusion layer surface;
By two flat boards after fixing, and catalyst anode layer, proton exchange rete and catalyst cathode layer between two flat boards take out after 140 DEG C～300 DEG C heating 2min～30min, removes described flat board, obtains membrane electrode of fuel batter with proton exchange film.
Preferably, described flat board is steel plate or alloy aluminium sheet.
Preferably, described anode catalyst is the black or PtRu/C eelctro-catalyst of PtRu.
Preferably, described cathod catalyst is the black or Pt/C eelctro-catalyst of Pt.
Preferably, described anode diffusion layer and cathode diffusion layer are carbon paper or carbon cloth.
The present invention also provides a kind of membrane electrode of fuel batter with proton exchange film shaping jig, comprising:
First dull and stereotyped and the second flat board of parallel placement, described the first flat board and the second flat board are provided with screw;
Between described the first flat board and the second flat board, form holding area;
Connect the bolt of described the first flat board and the second flat board.
Preferably, described flat board is steel plate or alloy aluminium sheet.
Preferably, four edges that are arranged at described the first flat board or the second flat board of described screw symmetry.
The invention provides a kind of preparation method of membrane electrode of fuel batter with proton exchange film.With respect to existing method for preparing membrane electrode, the present invention adjusts the press moulding mode of membrane electrode.In order to improve the performance of fuel cell, first membrane electrode is respectively placed between two flat boards, above-mentioned flat board is provided with screw, and is fixedly connected with by bolt is parallel, under dull and stereotyped pressure-acting, each layer of abundant, smooth contact of membrane electrode.Simultaneously, the present invention controls moment of torsion, ensure that heating process middle plateform applies suitable thrust to each layer of membrane electrode, in mold process, each layer of membrane electrode is difficult for deforming, ensure that thus anode diffusion layer, cathode diffusion layer in the membrane electrode after mold pressing have higher porosity, ensure the patency that proton, electronics, gas and system are carried, improve the chemical property of fuel cell.The present invention also coordinates acid extraction is controlled, and ensures to have higher adhesion strength between each layer, extends the service life cycle of fuel cell.Experiment showed, that the membrane electrode that adopts the inventive method to prepare has comparatively excellent discharge performance, its preparation technology is easy and simple to handle, also without introducing the molding apparatus that price is comparatively expensive.Therefore, use said method to prepare membrane electrode easy and simple to handle, cost is low, chemical property excellence.
Brief description of the drawings
Fig. 1 is the placement schematic diagram of flat board, catalyst anode layer, proton exchange rete and catalyst cathode layer;
Fig. 2 is the structural representation of proton exchange membrane dye cell membrane electrode shaping jig;
Voltage and the power curve of Fig. 3 test when to be the membrane electrode prepared of embodiment 1 discharge with 3M methanol solution at 25 DEG C of room temperatures;
Voltage and the power curve of Fig. 4 test when to be the membrane electrode prepared of embodiment 2 discharge with 3M methanol solution at 25 DEG C of room temperatures;
Voltage and the power curve of Fig. 5 test when to be the membrane electrode prepared of embodiment 3 discharge with 3M methanol solution at 25 DEG C of room temperatures;
Voltage and the power curve of Fig. 6 test when to be the membrane electrode prepared of embodiment 4 discharge with 3M methanol solution at 25 DEG C of room temperatures;
Voltage and the power curve of Fig. 7 test when to be the membrane electrode prepared of embodiment 5 discharge with 3M methanol solution at 25 DEG C of room temperatures;
Voltage and the power curve of Fig. 8 test when to be the membrane electrode prepared of embodiment 6 discharge with 3M methanol solution at 25 DEG C of room temperatures;
Voltage and the power curve of Fig. 9 test when to be the membrane electrode prepared of comparative example 1 discharge with 3M methanol solution at 25 DEG C of room temperatures.
Embodiment
In order further to understand the present invention, below in conjunction with embodiment, the preferred embodiment of the invention is described, but should be appreciated that these are described is for further illustrating the features and advantages of the present invention, instead of limiting to the claimed invention.
The preparation method who the embodiment of the invention discloses a kind of cape jasmine exchange film fuel cell film electrode, comprising:
Catalyst anode layer, proton exchange rete and catalyst cathode layer are stacked in successively between two flat boards of parallel placement; Described flat board is provided with screw, and two flat boards are connected by bolt; It is 0.5Nm～5Nm that moment of torsion is set, fixing relative position after two flat boards are compressed; Described catalyst anode layer comprises anode diffusion layer and is overlying on the anode catalyst layer on described anode diffusion layer surface; Described catalyst cathode layer comprises cathode diffusion layer and is overlying on the cathode catalyst layer on described anode diffusion layer surface;
By two flat boards after fixing, and catalyst anode layer, proton exchange rete and catalyst cathode layer between two flat boards take out after 140 DEG C～300 DEG C heating 2min～30min, removes described flat board, obtains membrane electrode of fuel batter with proton exchange film.
The inventor finds after deliberation: the press moulding mode of membrane electrode is to electrode performance important.Press moulding mode has determined the adhesion size between the each assembly of membrane electrode, and whether gas and fluid transfer be unobstructed, and whether proton and electron channel are obstructed etc.For this reason, the inventor considers to improve by adjusting press moulding mode the chemical property of membrane electrode.
First the present invention is stacked in catalyst anode layer, proton exchange rete and catalyst cathode layer between two parallel-plates successively.Be illustrated in figure 1 the placement schematic diagram of flat board 1, catalyst anode layer, proton exchange rete 3 and catalyst cathode layer, when placement, the anode catalyst layer 22 of catalyst anode layer and the cathode catalyst layer of catalyst cathode layer 32 are contacted with proton exchange membrane 3.
Above-mentioned catalyst anode layer comprises anode diffusion layer 21 and is overlying on the anode catalyst layer 22 on described anode diffusion layer surface.Above-mentioned catalyst cathode layer comprises cathode diffusion layer 31 and is overlying on the cathode catalyst layer 32 on described anode diffusion layer surface.Above-mentioned catalyst anode layer/catalyst cathode layer can, according to method preparation well known to those skilled in the art, be specifically as follows: at anode diffusion layer 21/ cathode diffusion layer 31 surface spraying anode catalyst/cathod catalysts.Wherein, anode diffusion layer 21 and cathode diffusion layer 31 can be carbon paper or carbon cloth.Anode catalyst is preferably the black or PtRu/C eelctro-catalyst of PtRu, and anode catalyst quantity for spray is preferably 2mg/cm
2～5mg/cm
2.Cathod catalyst is preferably the black or Pt/C eelctro-catalyst of Pt, and the quantity for spray of cathod catalyst is preferably 2mg/cm
2～5mg/cm
2.
Above-mentioned two flat boards are provided with screw, realize fixing to two flat position, simultaneously also for adjusting pressure between two flat boards for coordinating with bolt 4.Specifically, the effect of above-mentioned two flat boards and bolt is:
The first, catalyst anode layer, proton exchange rete and catalyst cathode layer to be exerted pressure, two parallel placements of flat board ensure each layer of abundant, smooth contact of membrane electrode.
The second, by the adjustment of moment of torsion is realized between two flat boards and has suitable thrust.Above-mentioned suitable thrust is: ensure that catalyst anode layer, proton exchange rete make again the thrust described in anode diffusion layer and the unlikely distortion of cathode diffusion layer when fully contact with catalyst cathode layer.
Three, in follow-up heating process, catalyst anode layer, proton exchange rete and catalyst cathode layer are heated and expand, and two dull and stereotyped relative positions are fixed, and play positioning action to above-mentioned each layer.Meanwhile, because the expansion of above-mentioned each layer makes dull and stereotyped to produce reaction force to above-mentioned each layer, to above-mentioned each layer further pressurization, promote each layer bonding.
As preferred version, four edges that are arranged at described flat board of screw symmetry, corresponding, the number of bolt is also 4.Ensure to be thus clipped in catalyst anode layer, proton exchange rete and catalyst cathode layer between flat board stressed more even.Dull and stereotyped material preferably adopts heat conductivility good, the steel plate that heat resistance is high and the coefficient of expansion is less or alloy aluminium sheet.
In addition, the present invention also ensures that by the control to moment of torsion, heating time and temperature anode diffusion layer and cathode diffusion layer in the membrane electrode after mold pressing have higher porosity, ensure the patency that proton, electronics, gas and liquid are carried.
In the present invention, it is 0.5Nm～5Nm that moment of torsion is set in the operation by two flat boards by bolt tightening.The thrust that above-mentioned moment of torsion provides is enough to ensure each layer of abundant, smooth contact of membrane electrode.Can cause in follow-up heating process if moment of torsion is excessive, dull and stereotyped excessive to the pressure of each layer of membrane electrode, cause anode diffusion layer, cathode diffusion layer and proton exchange membrane to deform and even break, thereby affect porosity and support strength, cause catalyst to be difficult to normally play a role.Be 4cm for area
2～10cm
2membrane electrode, moment of torsion is preferably made as 0.8Nm～1.5Nm.
Above-mentionedly can ensure not deform after membrane electrode mold pressing to the control of moment of torsion, in order to improve the adhesion strength between each layer, extend the service life cycle of fuel cell, the present invention also coordinates heating-up temperature and heating time is controlled, to ensure having higher adhesion strength between each layer of membrane electrode.It is 140 DEG C～300 DEG C that the present invention arranges heating-up temperature, and the time is 2min～30min.It is 140 DEG C～180 DEG C that heating-up temperature is preferably set, and heating-up temperature is 10min～20min; Or it is 180 DEG C～300 DEG C that heating-up temperature is set, and heating-up temperature is 5min～10min.After heating, flat board and membrane electrode taking-up are cooled to room temperature according to the method described above, remove flat board and just obtain membrane electrode.
From above-mentioned discussion, in order to improve the performance of fuel cell, the present invention adjusts the press moulding mode of membrane electrode.Be specially: first membrane electrode is respectively placed between two flat boards, above-mentioned flat board is provided with screw, and be fixedly connected with by bolt is parallel, under dull and stereotyped pressure-acting, each layer of abundant, smooth contact of membrane electrode.Simultaneously, the present invention controls moment of torsion, ensure that heating process middle plateform applies suitable thrust to each layer of membrane electrode, in mold process, each layer of membrane electrode is difficult for deforming, ensure that thus anode diffusion layer, cathode diffusion layer in the membrane electrode after mold pressing have higher porosity, ensure the patency that proton, electronics, gas and liquid are carried, improve the chemical property of fuel cell.The present invention also coordinates acid extraction is controlled, and ensures to have higher adhesion strength between each layer, extends the service life cycle of fuel cell.
Accordingly, the present invention also provides a kind of proton exchange membrane dye cell membrane electrode shaping jig, and as shown in Figure 2, this fixture comprises its structure:
The first dull and stereotyped 11 and second flat board 12 of parallel placement, described first dull and stereotyped and the second dull and stereotyped above-mentioned screw 111 that is equipped with;
Between the first dull and stereotyped 11 and second flat board 12, form holding area, this holding area is used for placing catalyst anode layer, proton exchange rete and catalyst cathode layer;
Connect the bolt 4 of the first flat board 11 and the second flat board 12, the effect of this bolt 4 is not only the first flat board 11 to play with the second flat board 12 effect being fixedly connected with, and it is also for adjusting two thrusts between flat board.
In order to ensure that first dull and stereotyped 11 and second dull and stereotyped 12 pairs of membrane electrodes that are clipped in therebetween have uniform pressure, the present invention is preferably symmetricly set in screw four dull and stereotyped edges.Accordingly, the number of bolt 4 is also 4.Dull and stereotyped sheet material preferably adopts heat conductivility good, the steel plate that heat resistance is high and the coefficient of expansion is less or alloy aluminium sheet.
The operation that uses above-mentioned shaping jig to prepare membrane electrode of fuel batter with proton exchange film is specially:
1, catalyst anode layer, proton exchange rete and catalyst cathode layer are stacked in successively between the first flat board and the second flat board;
2, tight a bolt, moment of torsion is preferably 0.5Nm～5Nm;
3, above-mentioned fixture is placed in to 140 DEG C～300 DEG C heating and takes out after 2min～30min, remove described flat board, obtain membrane electrode of fuel batter with proton exchange film.
In order further to understand the present invention; preparation method below in conjunction with embodiment to membrane electrode of fuel batter with proton exchange film provided by the invention and membrane electrode of fuel batter with proton exchange film shaping jig are described, and protection scope of the present invention is not limited by the following examples.
Embodiment 1
At a slice 2 × 2cm
2anode carbon paper on, 3mg/cm in spraying
2platinum ruthenium black catalyst, at another sheet 2 × 2cm
2negative electrode carbon paper on, 3mg/cm in spraying
2platinum black catalyst, these two carbon papers are placed in to a 3 × 3cm
2the both sides of Nafion117 film, catalyst layer contacts with Nafion film, then these membrane electrode assemblies is placed between two flat boards of the shaping jig shown in Fig. 2, is dull and stereotypedly made up of steel plate, fixes two flat boards with screw rod, moment of torsion is 0.9Nm.
Fixture heats 10 minutes in 200 DEG C of baking ovens, takes out, cooling, obtains membrane electrode.
This membrane electrode is arranged on to one from breathing in methanol fuel cell, at room temperature tests its performance, methanol concentration is 3M, and test result as shown in Figure 3.Voltage and the power curve of Fig. 3 test when to be the membrane electrode prepared of the present embodiment discharge with 3M methanol solution at 25 DEG C of room temperatures.In figure, abscissa is discharging current, and main ordinate is discharge voltage, and secondary ordinate is discharge power.As shown in Figure 3, this membrane electrode has good discharge performance.
Embodiment 2
At a slice 2 × 2cm
2anode carbon paper on, 2mg/cm in spraying
2platinum ruthenium black catalyst, at another sheet 2 × 2cm
2negative electrode carbon paper on, 2mg/cm in spraying
2platinum black catalyst, these two carbon papers are placed in to a 3 × 3cm
2the both sides of Nafion117 film, catalyst layer contacts with Nafion film, then these membrane electrode assemblies is placed between two flat boards of the shaping jig shown in Fig. 2, is dull and stereotypedly made up of steel plate, fixes two flat boards with screw rod, moment of torsion is 0.9Nm.
Fixture heats 8 minutes in 220 DEG C of baking ovens, takes out, cooling, obtains membrane electrode.
This membrane electrode is arranged on to one from breathing in methanol fuel cell, at room temperature tests its performance, methanol concentration is 3M, and test result as shown in Figure 4.Voltage and the power curve of Fig. 4 test when to be the membrane electrode prepared of the present embodiment discharge with 3M methanol solution at 25 DEG C of room temperatures.In figure, abscissa is discharging current, and main ordinate is discharge voltage, and secondary ordinate is discharge power.As shown in Figure 4, this membrane electrode has good discharge performance.
Embodiment 3
At a slice 2 × 2cm
2anode carbon paper on, 2mg/cm in spraying
2platinum ruthenium black catalyst, at another sheet 2 × 2cm
2negative electrode carbon paper on, 2mg/cm in spraying
2platinum black catalyst, these two carbon papers are placed in to a 3 × 3cm
2the both sides of Nafion117 film, catalyst layer contacts with Nafion film, then these membrane electrode assemblies is placed between two flat boards of the shaping jig shown in Fig. 2, is dull and stereotypedly made up of alloy aluminium sheet, fixes two flat boards with screw rod, moment of torsion is 0.9Nm.
Fixture heats 15 minutes in 180 DEG C of baking ovens, takes out, cooling, obtains membrane electrode.
This membrane electrode is arranged on to one from breathing in methanol fuel cell, at room temperature tests its performance, methanol concentration is 3M, and test result as shown in Figure 5.Voltage and the power curve of Fig. 5 test when to be the membrane electrode prepared of the present embodiment discharge with 3M methanol solution at 25 DEG C of room temperatures.In figure, abscissa is discharging current, and main ordinate is discharge voltage, and secondary ordinate is discharge power.As shown in Figure 5, this membrane electrode has good discharge performance.
Embodiment 4
At a slice 2 × 2cm
2anode carbon paper on, 2mg/cm in spraying
2platinum ruthenium black catalyst, at another sheet 2 × 2cm
2negative electrode carbon paper on, 2mg/cm in spraying
2platinum black catalyst, these two carbon papers are placed in to a 3 × 3cm
2the both sides of Nafion117 film, catalyst layer contacts with Nafion film, then these membrane electrode assemblies is placed between two flat boards of the shaping jig shown in Fig. 2, is dull and stereotypedly made up of alloy aluminium sheet, fixes two flat boards with screw rod, moment of torsion is 0.9Nm.
Fixture heats 18 minutes in 140 DEG C of baking ovens, takes out, cooling, obtains membrane electrode.
This membrane electrode is arranged on to one from breathing in methanol fuel cell, at room temperature tests its performance, methanol concentration is 3M, and test result as shown in Figure 6.Voltage and the power curve of Fig. 6 test when to be the membrane electrode prepared of the present embodiment discharge with 3M methanol solution at 25 DEG C of room temperatures.In figure, abscissa is discharging current, and main ordinate is discharge voltage, and secondary ordinate is discharge power.As shown in Figure 6, this membrane electrode has good discharge performance.
Embodiment 5
Operate identical with embodiment 2, difference be that fixing two dull and stereotyped moments of torsion with screw rod is 1.3Nm.
This membrane electrode is arranged on to one from breathing in methanol fuel cell, at room temperature tests its performance, methanol concentration is 3M, and test result as shown in Figure 7.Voltage and the power curve of Fig. 7 test when to be the membrane electrode prepared of the present embodiment discharge with 3M methanol solution at 25 DEG C of room temperatures.In figure, abscissa is discharging current, and main ordinate is discharge voltage, and secondary ordinate is discharge power.As shown in Figure 7, this membrane electrode has good discharge performance.
Embodiment 6
Operate identical with embodiment 2, difference be that fixing two dull and stereotyped moments of torsion with screw rod is 0.6Nm.
This membrane electrode is arranged on to one from breathing in methanol fuel cell, at room temperature tests its performance, methanol concentration is 3M, and test result as shown in Figure 8.Voltage and the power curve of Fig. 8 test when to be the membrane electrode prepared of the present embodiment discharge with 3M methanol solution at 25 DEG C of room temperatures.In figure, abscissa is discharging current, and main ordinate is discharge voltage, and secondary ordinate is discharge power.As shown in Figure 8, this membrane electrode has good discharge performance.
Comparative example 1
At a slice 2 × 2cm
2anode carbon paper on, 3mg/cm in spraying
2platinum ruthenium black catalyst, at another sheet 2 × 2cm
2negative electrode carbon paper on, 3mg/cm in spraying
2platinum black catalyst, these two carbon papers are placed in to a 3 × 3cm
2the both sides of Nafion117 film, catalyst layer contacts with Nafion film, then these membrane electrode assemblies is placed in to hot press hot-forming, temperature is 130 DEG C, pressure is 0.5Mpa, the time is 3 minutes, obtains membrane electrode after hot pressing.
This membrane electrode is arranged on to one from breathing in methanol fuel cell, at room temperature tests its performance, methanol concentration is 3M, and test result as shown in Figure 9.Voltage and the power curve of Fig. 9 test when to be the membrane electrode prepared of this comparative example discharge with 3M methanol solution at 25 DEG C of room temperatures.In figure, abscissa is discharging current, and main ordinate is discharge voltage, and secondary ordinate is discharge power.As shown in Figure 9, the membrane electrode that the discharge performance of the membrane electrode of the preparation of this comparative example is prepared not as good as embodiment 1.
The explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection range of the claims in the present invention.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (5)
1. a preparation method for membrane electrode of fuel batter with proton exchange film, comprising:
Catalyst anode layer, proton exchange rete and catalyst cathode layer are stacked in successively between two flat boards of parallel placement; Described flat board is provided with screw, and described two flat boards are connected by bolt; It is 0.5Nm～5Nm that moment of torsion is set, fixing relative position after two flat boards are compressed; Described catalyst anode layer comprises anode diffusion layer and is overlying on the anode catalyst layer on described anode diffusion layer surface; Described catalyst cathode layer comprises cathode diffusion layer and is overlying on the cathode catalyst layer on described cathode diffusion layer surface;
By two flat boards after fixing, and catalyst anode layer, proton exchange rete and catalyst cathode layer between two flat boards take out after 140 DEG C～300 DEG C heating 2min～30min, removes described flat board, obtains membrane electrode of fuel batter with proton exchange film.
2. preparation method according to claim 1, is characterized in that, described flat board is steel plate or alloy aluminium sheet.
3. preparation method according to claim 1, is characterized in that, described anode catalyst is the black or PtRu/C eelctro-catalyst of PtRu.
4. preparation method according to claim 1, is characterized in that, described cathod catalyst is the black or Pt/C eelctro-catalyst of Pt.
5. preparation method according to claim 1, is characterized in that, described anode diffusion layer and cathode diffusion layer are carbon paper or carbon cloth.
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|---|---|---|---|---|
| CN102729180A (en) * | 2012-07-09 | 2012-10-17 | 林郁 | Diagonal clamping die |
| CN102956909B (en) * | 2012-11-27 | 2014-09-10 | 新源动力股份有限公司 | Fuel cell membrane electrode and test sample preparing clamp |
| CN103170928B (en) * | 2013-03-04 | 2015-09-16 | 中国科学院长春应用化学研究所 | The fixture shaping for membrane electrode of fuel batter with proton exchange film and the preparation method of membrane electrode of fuel batter with proton exchange film |
| CN105328328B (en) * | 2015-10-12 | 2017-03-29 | 中国石油大学(华东) | A kind of metal double polar plates superplastic diffusion bonding technique |
| CN105351308A (en) * | 2015-11-26 | 2016-02-24 | 中国航空动力机械研究所 | Pasting and fastening device for high-temperature pipeline strain gauge |
| JP6967752B2 (en) * | 2016-09-09 | 2021-11-17 | パナソニックＩｐマネジメント株式会社 | Fuel cell catalyst layer and fuel cell |
| CN109847974B (en) * | 2018-11-23 | 2021-07-09 | 一汽解放汽车有限公司 | Proton exchange membrane fuel cell membrane electrode spraying clamp and method for preparing membrane electrode by using same |
| CN109599580A (en) * | 2018-12-24 | 2019-04-09 | 天津理工大学 | A kind of ultra-thin membrane electrode and its preparation method and application for neat liquid fuel cell |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101183717A (en) * | 2007-11-27 | 2008-05-21 | 江苏雷石新能源科技有限公司 | Pressing mold device for hot pressure prepared fuel cell membrane electrode |
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| KR101386162B1 (en) * | 2006-07-21 | 2014-04-18 | 삼성에스디아이 주식회사 | Electrode for fuel cell and fuel cell employing the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101183717A (en) * | 2007-11-27 | 2008-05-21 | 江苏雷石新能源科技有限公司 | Pressing mold device for hot pressure prepared fuel cell membrane electrode |
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