CN108878932A - A kind of low loss membrane electrode and preparation method for fuel cell - Google Patents

A kind of low loss membrane electrode and preparation method for fuel cell Download PDF

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CN108878932A
CN108878932A CN201810697328.1A CN201810697328A CN108878932A CN 108878932 A CN108878932 A CN 108878932A CN 201810697328 A CN201810697328 A CN 201810697328A CN 108878932 A CN108878932 A CN 108878932A
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membrane electrode
fuel cell
membrane
preparation
low loss
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陈庆
廖健淞
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Chengdu New Keli Chemical Science Co Ltd
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Chengdu New Keli Chemical Science Co Ltd
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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]
    • 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
    • H01M4/92—Metals of platinum group
    • H01M4/921—Alloys or mixtures with metallic elements
    • 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
    • H01M4/92—Metals of platinum group
    • H01M4/925—Metals of platinum group supported on carriers, e.g. powder carriers
    • 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
    • H01M2008/1095—Fuel cells with polymeric electrolytes
    • 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 present invention proposes a kind of low loss membrane electrode and preparation method for fuel cell, polystyrene monodisperse latex is evenly dispersed into dehydrated alcohol, multilayer chip glass fibre pore membrane is put into as substrate, the 70-75 DEG C of heating water bath under lower pressure, ultrasonic vibration is carried out simultaneously, potassium chloroplatinate, polyvinylpyrrolidone and bromination nak response are added later, after the completion, it is immersed in solution-off polymer in toluene solution, after standing for 24 hours, it is compound with proton exchange membrane, gas diffusion layers progress after washed drying, obtain required membrane electrode.The present invention is by multilayer chip glass fibre pore membrane as substrate, directly prepare the three-dimensional porous orderly catalyst layer of counter opal structure, it need not be coated into membrane electrode and increase functional layer, overcome the defect that catalyst loss easily occurs for membrane electrode, the stability of catalyst layer is improved, the loss of Pt nanoparticle is reduced.

Description

A kind of low loss membrane electrode and preparation method for fuel cell
Technical field
The present invention relates to field of fuel cell technology, more particularly to a kind of low loss membrane electrode for fuel cell and Preparation method.
Background technique
Fuel cell is a kind of novel green that the chemical energy being stored in fuel and oxidant is converted into electric energy Energy conversion apparatus has energy density height, modularization, easy to use, safe, efficient and advantages of environment protection, effective Energy deficiency can also be effectively solved while alleviating environmental pressure.Emerging green energy resource of the fuel cell as 21 century, Increasingly focus on environmental protection it is present, by researcher extensive concern and widely popularize.
The single battery of Proton Exchange Membrane Fuel Cells PEMFC is mainly by anode flow field board, membrane electrode, cathode flow field plate And the main components such as both sides sealing circle composition.Wherein flow-field plate is called bipolar plates, and support is played in PEMFC and fuel is guided to exist The effect that electrode surface flows in battery.The core of Proton Exchange Membrane Fuel Cells is its membrane electrode, including proton exchange membrane, Catalyst and gas diffusion layers three parts, three in one membreane electrode component made of three parts are suppressed at high temperature under high pressure are hairs First place of biochemical reaction, the preparation of membrane electrode（Material, structure, preparation process）Directly affect cost, the longevity of PEMFC Life and performance.
Proton Exchange Membrane Fuel Cells includes three transport channels in total：Proton is by film to Catalytic Layer, electron transfer channel And gas outlet channels；The quality of the transmission channels such as gas, proton and electronics directly decides that can a single battery normal Operation.The membrane electrode with satisfactory texture is prepared, phase reaction region on the one hand can be increased, transmission loss is reduced, thus effectively Promote the performance of membrane electrode；On the other hand good structure can effectively reduce the internal resistance of cell, and the longevity with entire single battery It orders also closely related.Therefore, the core technology in Proton Exchange Membrane Fuel Cells research is exactly the optimization of film electrode structure.Film electricity Extremely middle Catalytic Layer two sides are in contact with proton exchange membrane and gas diffusion layers respectively, and the noble metal catalyst of traditional membrane electrode is most To be supported in carbon ball, and it is disordered structure, is separated after carbon ball is oxidized in catalytic process with catalyst, cause largely to urge Agent particle loss.
In order to improve the defect of the generally existing catalyst loss of membrane electrode, Chinese invention patent application number 200680050372.9 disclose a kind of membrane electrode assembly for fuel cell and the fuel cell including the component, described Membrane electrode assembly has at the opposite face in the face towards polymer dielectric film that catalyst layer is arranged in prevent catalyst from damaging The perforated membrane of mistake, perforated membrane have the gelatin polymer being coated on the one or both sides of its main surface, and the catalyst Trapping layer is coupled by thermal welding and catalyst layer and/or gas diffusion layers with high coupling force, which has in length The effect that the reduced performance of fuel cell minimizes caused by making during phase work because of catalyst loss.Chinese invention patent application Number 201510107028.X discloses a kind of membrane electrode and preparation method thereof with gas flow configuration, in the gas of membrane electrode Joined gas uniform flow layer structure among diffusion layer and catalyst layer, gas uniform flow layer by three-dimensional multistage hole nitrating class graphene with It is coated in above diffusion layer and forms after polytetrafluoroethylene teflon soliquoid mixing, uniform flow layer has porous, gas passage mostly and uniform The features such as, transmission channel is provided for the transmission of reaction gas, and provide reacting environment for reaction gas and catalyst, reduced Membrane electrode generally existing catalyst catalytic performance loss and mass transport loss.
Porous functional layer structure is added above by catalyst layer and between adjacent film layers, to a certain extent can The stability for enough improving catalyst layer, reduces catalyst quality transmission loss, however porous functional layer hole is big in operating process Small and hole uniformity is difficult to be controlled, and the addition of functional layer makes the increase of membrane electrode thickness, and there may be new problems, so that Catalyst Pt nanoparticle still loses in catalytic process, influences the stability of catalyst layer.Therefore, by catalyst The adjustment of self structure, to realize to reduce catalyst reaction loss and improve catalyst layer stability that there is highly important reality Meaning.
Summary of the invention
Catalyst loss easily occurs for membrane electrode, and existing scheme improvement is bad, affects the defect of its application, The present invention proposes a kind of low loss membrane electrode and preparation method for fuel cell, by the three-dimensional for preparing counter opal structure Porous orderly catalyst layer reduces the loss of Pt nanoparticle to improve the stability of catalyst layer.
To solve the above problems, the present invention uses following technical scheme：
A kind of low loss membrane electrode for fuel cell, which includes proton exchange membrane layer, Catalytic Layer and gas diffusion Layer, wherein the proton exchange membrane is perfluoro sulfonic acid membrane, with a thickness of 50-200 μm, the gas diffusion layers are carbon paper, thick Degree is 0.1-1 mm；The catalyst layer with a thickness of 20-80 μm, by the porous counter opal knot formed containing catalyst particles Structure, wherein the catalyst granules is nano-platinum particle, particle size 5-20nm.
Preferably, the aperture of the porous counter opal structure is 1-5 μm.
A kind of preparation method of the low loss membrane electrode for fuel cell, specific preparation method are as follows：
（1）Polystyrene monodisperse latex is evenly dispersed into dehydrated alcohol, by sonic oscillation, obtain polystyrene Monodisperse latex dispersion liquid；
（2）Multilayer chip glass fibre pore membrane is placed in the polystyrene monodisperse latex dispersion liquid, in low-pressure section Heating water bath under part, while ultrasonic vibration is carried out, so that the polystyrene monodisperse latex is mixed the multilayer chip glass The interlayer of glass fiber pore membrane makes interfloor distance be extended to 1-10 μm, takes out, is dried to obtain complex layered materials；
（3）Potassium chloroplatinate, polyvinylpyrrolidone and potassium bromide are added into the complex layered materials, water is added to continue ultrasound vibration It swings, is heated to 80-100 DEG C, react the complex layered materials that take out that treated after 3-5h, be immersed in solution-off in toluene solution at once After standing 24-48h, complex layered materials are removed into single layer composite sheet material for polystyrene；After washed drying with proton Exchange membrane, gas diffusion layers progress are compound, obtain required membrane electrode.
Preferably, step（1）Described in polystyrene monodisperse latex diameter be 1-2 μm.
Preferably, step（2）Described in environment under low pressure pressure in 80-360Pa.
Preferably, step（2）Described in water bath heating temperature be 70-75 DEG C.
Preferably, step（3）The molar ratio of the potassium chloroplatinate, polyvinylpyrrolidone and potassium bromide is 1: 10: 12-18。
Preferably, step（3）The heating rate control of the heating is 10-30 DEG C/min.
Preferably, step（3）Using polytetrafluoroethylene (PTFE) as binder in the recombination process.
The noble metal catalyst of traditional membrane electrode be mostly be supported in carbon ball, and be disordered structure, in catalytic process Middle carbon ball separates after being oxidized with catalyst, causes a large amount of catalyst particles to lose, to reduce service life, limits it Using.In consideration of it, a kind of low loss membrane electrode and preparation method for fuel cell, membrane electrode include proton exchange membrane layer, Catalyst layer and gas diffusion layers.Wherein proton exchange membrane is perfluoro sulfonic acid membrane, and gas diffusion layers are carbon paper.Catalyst layer be by Polystyrene（PS）Monodisperse latex is evenly dispersed into dehydrated alcohol, is put into multilayer chip glass fibre pore membrane as base Bottom, the heating water bath under lower pressure, while ultrasonic vibration is carried out, potassium chloroplatinate, polyvinylpyrrolidone and bromine are added later Change potassium, to take out after the reaction was completed, being immersed in dissolution in toluene solution, except polymer is taken off, removing after standing is sheet single layer, warp It is compound with proton exchange membrane, gas diffusion layers progress after washing is dry, obtain required membrane electrode.The present invention passes through multilayer chip The physics confinement of glass fibre pore membrane acts on, and grows PS colloid micro ball closs packing between interlayer under ultrasonic vibration, is formed with The opal structural of sequence arrangement adsorbs potassium chloroplatinate by the hole of opal structural, makes it also at PVP and potassium bromide effect Originally it is nano-platinum particle, and is uniformly deposited in PS particulate interspaces and forms counter opal structure, finally by toluene by PS colloid Grain dissolution obtains the platinum catalyst layers of counter opal structure.It is characterized in that, more by the three-dimensional for preparing counter opal structure The orderly catalyst layer in hole improves the stability of catalyst layer, reduces the loss of Pt nanoparticle, and then improves membrane electrode use Service life is conducive to it and carries out industrialization development.
Membrane electrode prepared by the present invention and conventional film electrode material are subjected to structure, hydrophobic performance, battery performance etc. Test, test data are as shown in table 1.
Table 1：
The present invention proposes a kind of low loss membrane electrode and preparation method for fuel cell, compared with prior art, protrudes The characteristics of and excellent effect be：
1, the present invention is evenly dispersed into dehydrated alcohol by polystyrene monodisperse latex, is put into multilayer chip glass fibre Pore membrane is acted on by the physics confinement of multilayer chip glass fibre pore membrane as substrate, makes polystyrene colloidal under ultrasonic vibration Body microballoon closs packing between interlayer is grown, and forms the opal structural of ordered arrangement, adsorbs chlorine by the hole of opal structural Potassium platinate, and reduced nano platinum grain obtain the platinum catalyst layers of three-dimensional porous orderly counter opal structure, it is not necessary to membrane electrode Middle coating increases functional layer, further increases the stability of catalyst layer, reduces the loss of Pt nanoparticle.
2, membrane electrode catalyst structure highly uniform sequential prepared by the present invention has excellent in catalysis hydrogen decomposable process Stability, while there are a large amount of macrovoids, relatively easy for the control of water content and gas content, increasing membrane electrode makes Use the service life.
3, preparation method of the present invention is simply controllable, is suitable for scale industrial production.
Specific embodiment
In the following, the present invention will be further described in detail by way of specific embodiments, but this should not be interpreted as to the present invention Range be only limitted to example below.Without departing from the idea of the above method of the present invention, according to ordinary skill The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
（1）It is that 1 μm of polystyrene monodisperse latex is evenly dispersed into dehydrated alcohol by diameter, by sonic oscillation, obtains To polystyrene monodisperse latex dispersion liquid；
（2）The polystyrene monodisperse latex dispersion liquid will be placed in a thickness of 0.3 mm multilayer chip glass fibre pore membrane In, in pressure, heating water bath, heating temperature are 72 DEG C under 360Pa lower pressure, while carrying out ultrasonic vibration, make the polyphenyl Ethylene monodisperse latex mixes the interlayer of the polymer porous film, and interfloor distance is made to be extended to 3 μm, obtains complex layered Material；
（3）Potassium chloroplatinate, the polyvinylpyrrolidine that excessive molar ratio is 1: 10: 13 are added into the complex layered materials Ketone and potassium bromide add water to continue sonic oscillation, are heated to 100 DEG C, the heating rate control of heating is 13 DEG C/min, after reacting 5h Treated complex layered materials are taken out, are immersed in toluene solution at once, after standing 28h, separate single layer compound sheet material Material is the porous counter opal structure of catalyst particles composition, and aperture is 2 μm, and cubical expansivity 1.2, catalyst granules is nanometer Platinum grain, particle size are 14 nanometers；
（4）By the single layer composite sheet material 50 μm of thickness after washing is dry, with a thickness of 130 μm of perfluoro sulfonic acid membranes, Bond compound with a thickness of the gas diffusion layers carbon paper of 0.1mm, obtains required membrane electrode.
The membrane electrode material that the present embodiment prepares is tested for the property, 25 DEG C of room temperature, humidity be 35% under the conditions of into Row test sample hydrophobicity and porosity test are prepared as using the membrane electrode of preparation as proton exchange membrane fuel cell electrode Effect area is 10cm2Monocell, for battery performance test using pure hydrogen as fuel, pure oxygen is oxidant, battery testing temperature 80 DEG C, it is as shown in table 2 to obtain data for 200 ml/min of anode hydrogen flow rate, 300 ml/min of cathode oxygen flow velocity.
Embodiment 2
（1）It is that 2 μm of polystyrene monodisperse latexes are evenly dispersed into dehydrated alcohol by diameter, by sonic oscillation, obtains To polystyrene monodisperse latex dispersion liquid；
（2）The polystyrene monodisperse latex dispersion liquid will be placed in a thickness of 0.3 mm multilayer chip glass fibre pore membrane In, in pressure, heating water bath, heating temperature are 72 DEG C under 360Pa lower pressure, while carrying out ultrasonic vibration, make the polyphenyl Ethylene monodisperse latex mixes the interlayer of the polymer porous film, and interfloor distance is made to be extended to 3 μm, obtains complex layered Material；
（3）Potassium chloroplatinate, the polyvinylpyrrolidine that excessive molar ratio is 1: 10: 18 are added into the complex layered materials Ketone and potassium bromide add water to continue sonic oscillation, are heated to 80 DEG C, the heating rate control of heating is 13 DEG C/min, after reacting 5h Treated complex layered materials are taken out, are immersed in toluene solution at once, after standing 28h, separate single layer compound sheet material Material is the porous counter opal structure of catalyst particles composition, and aperture is 2 μm, and cubical expansivity 1.2, catalyst granules is nanometer Platinum grain, particle size are 10 nanometers；
（4）By the single layer composite sheet material 25 microns of thickness after washing is dry, and with a thickness of 100 μm of perfluorinated sulfonic acids Film bond compound with a thickness of the gas diffusion layers carbon paper of 0.5mm, obtains required membrane electrode.
The membrane electrode material that the present embodiment prepares is tested for the property, 25 DEG C of room temperature, humidity be 35% under the conditions of into Row test sample hydrophobicity and porosity test are prepared as using the membrane electrode of preparation as proton exchange membrane fuel cell electrode Effect area is 10cm2Monocell, for battery performance test using pure hydrogen as fuel, pure oxygen is oxidant, battery testing temperature 80 DEG C, it is as shown in table 2 to obtain data for 200 ml/min of anode hydrogen flow rate, 300 ml/min of cathode oxygen flow velocity.
Embodiment 3
（1）It is that 1.5 μm of polystyrene monodisperse latexes are evenly dispersed into dehydrated alcohol by diameter, by sonic oscillation, Obtain polystyrene monodisperse latex dispersion liquid；
（2）The polystyrene monodisperse latex dispersion liquid will be placed in a thickness of 0.3 mm multilayer chip glass fibre pore membrane In, in pressure, heating water bath, heating temperature are 72 DEG C under 360Pa lower pressure, while carrying out ultrasonic vibration, make the polyphenyl Ethylene monodisperse latex mixes the interlayer of the polymer porous film, and interfloor distance is made to be extended to 3 μm, obtains complex layered Material；
（3）Potassium chloroplatinate, the polyvinylpyrrolidine that excessive molar ratio is 1: 10: 12 are added into the complex layered materials Ketone and potassium bromide add water to continue sonic oscillation, are heated to 90 DEG C, the heating rate control of heating is 13 DEG C/min, after reacting 5h Treated complex layered materials are taken out, are immersed in toluene solution at once, after standing 28h, separate single layer compound sheet material Material is the porous counter opal structure of catalyst particles composition, and aperture is 2 μm, and cubical expansivity 1.2, catalyst granules is nanometer Platinum grain, particle size are 5 nanometers；
（4）By the single layer composite sheet material 60 μm of thickness after washing is dry, with a thickness of 200 μm of perfluoro sulfonic acid membranes, Bond compound with a thickness of the gas diffusion layers carbon paper of 1mm, obtains required membrane electrode.
The membrane electrode material that the present embodiment prepares is tested for the property, 25 DEG C of room temperature, humidity be 35% under the conditions of into Row test sample hydrophobicity and porosity test are prepared as using the membrane electrode of preparation as proton exchange membrane fuel cell electrode Effect area is 10cm2Monocell, for battery performance test using pure hydrogen as fuel, pure oxygen is oxidant, battery testing temperature 80 DEG C, it is as shown in table 2 to obtain data for 200 ml/min of anode hydrogen flow rate, 300 ml/min of cathode oxygen flow velocity.
Embodiment 4
（1）It is that 2 μm of polystyrene monodisperse latexes are evenly dispersed into dehydrated alcohol by diameter, by sonic oscillation, obtains To polystyrene monodisperse latex dispersion liquid；
（2）The polystyrene monodisperse latex dispersion liquid will be placed in a thickness of 0.3 mm multilayer chip glass fibre pore membrane In, in pressure, heating water bath, heating temperature are 72 DEG C under 360Pa lower pressure, while carrying out ultrasonic vibration, make the polyphenyl Ethylene monodisperse latex mixes the interlayer of the polymer porous film, and interfloor distance is made to be extended to 3 μm, obtains complex layered Material；
（3）Potassium chloroplatinate, the polyvinylpyrrolidine that excessive molar ratio is 1: 10: 15 are added into the complex layered materials Ketone and potassium bromide add water to continue sonic oscillation, are heated to 100 DEG C, the heating rate control of heating is 13 DEG C/min, after reacting 5h Treated complex layered materials are taken out, are immersed in toluene solution at once, after standing 28h, separate single layer compound sheet material Material is the porous counter opal structure of catalyst particles composition, and aperture is 2 μm, and cubical expansivity 1.2, catalyst granules is nanometer Platinum grain, particle size are 10 nanometers；
（4）By the single layer composite sheet material 50 μm of thickness after washing is dry, with a thickness of 150 μm of perfluoro sulfonic acid membranes, Bond compound with a thickness of the gas diffusion layers carbon paper of 0.5mm, obtains required membrane electrode.
The membrane electrode material that the present embodiment prepares is tested for the property, 25 DEG C of room temperature, humidity be 35% under the conditions of into Row test sample hydrophobicity and porosity test are prepared as using the membrane electrode of preparation as proton exchange membrane fuel cell electrode Effect area is 10cm2 monocell, and for battery performance test using pure hydrogen as fuel, pure oxygen is oxidant, battery testing temperature 80 DEG C, it is as shown in table 2 to obtain data for 200 ml/min of anode hydrogen flow rate, 300 ml/min of cathode oxygen flow velocity.
Embodiment 5
（1）It is that 1 μm of polystyrene monodisperse latex is evenly dispersed into dehydrated alcohol by diameter, by sonic oscillation, obtains To polystyrene monodisperse latex dispersion liquid；
（2）The polystyrene monodisperse latex dispersion liquid will be placed in a thickness of 0.3 mm multilayer chip glass fibre pore membrane In, in pressure, heating water bath, heating temperature are 72 DEG C under 360Pa lower pressure, while carrying out ultrasonic vibration, make the polyphenyl Ethylene monodisperse latex mixes the interlayer of the polymer porous film, and interfloor distance is made to be extended to 3 μm, obtains complex layered Material；
（3）Potassium chloroplatinate, the polyvinylpyrrolidine that excessive molar ratio is 1: 10: 13 are added into the complex layered materials Ketone and potassium bromide add water to continue sonic oscillation, are heated to 100 DEG C, the heating rate control of heating is 13 DEG C/min, after reacting 5h Treated complex layered materials are taken out, are immersed in toluene solution at once, after standing 28h, separate single layer compound sheet material Material is the porous counter opal structure of catalyst particles composition, and aperture is 2 μm, and cubical expansivity 1.2, catalyst granules is nanometer Platinum grain, particle size are 15 nanometers；
（4）By the single layer composite sheet material 80 μm of thickness after washing is dry, and with a thickness of 50 μm of perfluoro sulfonic acid membranes, thickness Degree is that the gas diffusion layers carbon paper of 0.1mm bond compound, obtains required membrane electrode.
The membrane electrode material that the present embodiment prepares is tested for the property, 25 DEG C of room temperature, humidity be 35% under the conditions of into Row test sample hydrophobicity and porosity test are prepared as using the membrane electrode of preparation as proton exchange membrane fuel cell electrode Effect area is 10cm2Monocell, for battery performance test using pure hydrogen as fuel, pure oxygen is oxidant, battery testing temperature 80 DEG C, it is as shown in table 2 to obtain data for 200 ml/min of anode hydrogen flow rate, 300 ml/min of cathode oxygen flow velocity.
Comparative example 1
（1）The chloroplatinic acid that excessive molar ratio is 1: 10: 13 will be placed in a thickness of 0.3 mm multilayer chip glass fibre pore membrane Potassium, polyvinylpyrrolidone and potassium bromide add water sonic oscillation, are heated to 100 DEG C, the heating rate control of heating for 13 DEG C/ Min takes out treated complex layered materials after reacting 5h, dry, obtains catalyst layer；
（2）By 80 μm of catalyst layer thickness, with a thickness of 50 μm of perfluoro sulfonic acid membranes, with a thickness of the gas diffusion layers carbon paper of 0.1mm Bond compound, obtains required membrane electrode.
Comparative example 1 does not use preset polystyrene microsphere, fails to form counter opal structure catalyst layer, remaining and implementation Example 5 is consistent.
It is same according to embodiment 1-5 by the membrane electrode and fuel cell of obtained membrane electrode and embodiment 1-5 same size Under the conditions of tested, it is as shown in table 2 to obtain data.
Table 2：

Claims (8)

1. a kind of low loss membrane electrode for fuel cell, which is characterized in that the membrane electrode includes proton exchange membrane layer, urges Change layer and gas diffusion layers, wherein the proton exchange membrane is perfluoro sulfonic acid membrane, with a thickness of 50-200 μm, the gas diffusion Layer is carbon paper, with a thickness of 0.1-1 mm；The catalyst layer with a thickness of 20-80 μm, be made of catalyst particles porous anti- Opal structural, wherein the catalyst granules is nano-platinum particle, particle size 5-20nm.
2. a kind of low loss membrane electrode for fuel cell according to claim 1, which is characterized in that described porous anti- The aperture of opal structural is 1-5 μm.
3. a kind of preparation method of the low loss membrane electrode for fuel cell described in any claim of claim 1-2, special Sign is that specific preparation method is as follows：
（1）Polystyrene monodisperse latex is evenly dispersed into dehydrated alcohol, by sonic oscillation, obtain polystyrene Monodisperse latex dispersion liquid；
（2）Multilayer chip glass fibre pore membrane is placed in the polystyrene monodisperse latex dispersion liquid, in low-pressure section Heating water bath under part, while ultrasonic vibration is carried out, so that the polystyrene monodisperse latex is mixed the polyalcohol stephanoporate The interlayer of film, makes interfloor distance be extended to 1-10 μm, obtains complex layered materials；
（3）Into the complex layered materials, potassium chloroplatinate, polyvinylpyrrolidone and potassium bromide is added, water is added to continue ultrasound Oscillation, is heated to 80-100 DEG C, reacts the complex layered materials that take out that treated after 3-5h, is immersed in toluene solution at once, After standing 24-48h, complex layered materials are removed into single layer composite sheet material；After washed drying with proton exchange membrane, gas Body diffused layer progress is compound, obtains required membrane electrode.
4. a kind of preparation method of low loss membrane electrode for fuel cell according to claim 3, which is characterized in that Step（1）Described in polystyrene monodisperse latex diameter be 1-2 μm.
5. a kind of preparation method of low loss membrane electrode for fuel cell according to claim 3, feature exist In step（2）Described in environment under low pressure pressure in 80-360Pa.
6. a kind of preparation method of the low loss membrane electrode for fuel cell according to right 3, which is characterized in that step （2）Described in water bath heating temperature be 70-75 DEG C.
7. a kind of preparation method of low loss membrane electrode for fuel cell according to claim 3, feature exist In step（3）The molar ratio of the potassium chloroplatinate, polyvinylpyrrolidone and potassium bromide is 1: 10: 12-18.
8. a kind of preparation method of low loss membrane electrode for fuel cell according to claim 3, feature exist In step（3）The heating rate control of the heating is 10-30 DEG C/min.
CN201810697328.1A 2018-06-29 2018-06-29 A kind of low loss membrane electrode and preparation method for fuel cell Withdrawn CN108878932A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110504403A (en) * 2019-07-18 2019-11-26 肇庆市华师大光电产业研究院 A kind of preparation method of the ZIF8/ zinc oxide composite for lithium-sulfur cell functionality interlayer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110504403A (en) * 2019-07-18 2019-11-26 肇庆市华师大光电产业研究院 A kind of preparation method of the ZIF8/ zinc oxide composite for lithium-sulfur cell functionality interlayer
CN110504403B (en) * 2019-07-18 2022-03-15 肇庆市华师大光电产业研究院 Preparation method of ZIF 8/zinc oxide composite material for functional interlayer of lithium-sulfur battery

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