CN102769141A - Membrane electrode assembly of proton exchange membrane fuel cell and manufacturing method of membrane electrode assembly - Google Patents
Membrane electrode assembly of proton exchange membrane fuel cell and manufacturing method of membrane electrode assembly Download PDFInfo
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- CN102769141A CN102769141A CN201210272335XA CN201210272335A CN102769141A CN 102769141 A CN102769141 A CN 102769141A CN 201210272335X A CN201210272335X A CN 201210272335XA CN 201210272335 A CN201210272335 A CN 201210272335A CN 102769141 A CN102769141 A CN 102769141A
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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
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a membrane electrode assembly of a proton exchange membrane fuel cell (PEMFC) and a manufacturing method of the membrane electrode assembly. The manufacturing method comprises the following steps: preparing a perfluorinated sulfonic acid resin solution; coating and then drying the perfluorinated sulfonic acid resin solution on surfaces of an anode gas diffusion layer and a cathode gas diffusion layer respectively to obtain perfluorinated sulfonic acid resin layer I and perfluorinated sulfonic acid resin layer II; and arranging the anode gas diffusion layer, the perfluorinated sulfonic acid resin layer I, an anode catalyst layer, a proton exchange membrane, a cathode catalyst layer, a perfluorinated sulfonic acid resin layer II and a cathode gas diffusion layer in sequence, and then carrying out hot pressing under the temperature of 140 DEG C to obtain a membrane electrode assembly. The bonding between the perfluorinated sulfonic acid resins coated on the gas diffusion layers and the perfluorinated sulfonic acid resins in the catalyst layers is realized during the hot pressing, so that the bonding force between the gas diffusion layers and the catalyst layers are strengthened effectively, the qualified rate of the membrane electrode assemblies and the structural stability of the membrane electrode assemblies in use are improved, the performances of the membrane electrode assemblies are enhanced, and the service lives of the membrane electrode assemblies are prolonged.
Description
Technical field
The present invention relates to the Proton Exchange Membrane Fuel Cells field, specifically membrane electrode assembly of a proton exchanging film fuel battery and preparation method thereof.
Background technology
Membrane electrode assembly (MEA) is the key core parts of fuel cell power generation, and the elementary cell that the bipolar plates of membrane electrode assembly and its both sides has been formed fuel cell is fuel cell list pond.The membrane electrode assembly of Proton Exchange Membrane Fuel Cells is gas-diffusion electrode; Form by gas diffusion layers, Catalytic Layer and PEM; Traditional membrane electrode assembly is after Pt/C catalyst and a certain amount of polytetrafluoroethylene (PTFE) are mixed; Adopt methods such as blade coating, spraying, silk screen printing to be prepared on the gas diffusion layers (GDL), form gas-diffusion electrode (GDE), be about to Catalytic Layer and be prepared on the gas diffusion layers; At last gas-diffusion electrode and PEM pressing are at a certain temperature obtained, be called GDE type membrane electrode assembly.Patent CN02138482.7, CN200410013147.0, CN200410027867.2 etc. all relate to the preparation method of GDE type membrane electrode assembly.But catalyst utilization is lower in the membrane electrode assembly of the method preparation, and electrode performance is relatively poor, is eliminated gradually.
At present; More advanced membrane electrode assembly preparation method evenly forms slurry with perfluorinated sulfonic resin and catalyst mix; Through transfer method, spraying process etc. Catalytic Layer is prepared on the PEM again; Forming thin layer overlay film Catalytic Layer electrode is CCM, at last gas diffusion layers and CCM pressing is at a certain temperature obtained membrane electrode assembly, is called CCM type membrane electrode assembly.CCM type membrane electrode assembly is because Catalytic Layer directly is prepared on the PEM; Catalytic Layer combines with PEM well; Having significantly improved the utilance and the proton conductivity of catalyst, is the mainstream technology route of present film electrode component of proton exchange film fuel battery preparation.But for CCM type membrane electrode assembly; Because gas diffusion layers adopts the carbon fiber paper that contains certain polytetrafluoroethylene usually; Catalytic Layer then is generally perfluorinated sulfonic resin and catalyst, and material is formed variant, therefore prepares in the process at MEA; Gas diffusion layers and Catalytic Layer adhesion a little less than; In use occur gas diffusion layers easily and separate, cause problems such as contact resistance increase, the increase of reactive material diffusional resistance, thereby make that membrane electrode assembly property descends, the lost of life with Catalytic Layer.
Patent CN03139647.X has proposed a kind of preparation method of film electrode component of proton exchange film fuel battery; Adopting low boiling, low viscosity alcohol is dispersant; With higher boiling point, high viscosity alcohol is that stabilizer prepares catalyst pulp; Place the PEM both sides through methods such as silk screen printing, spraying or brushings then, will scribble the membrane electrode of catalyst and the carbon paper or the carbon cloth of hydrophobic processing at last and under uniform temperature and pressure, obtain membrane electrode assembly.Patent CN200610035275.4 discloses the method that a kind of direct spraying prepares fuel cell membrane electrode; Concrete technology is with being fixed in after the PEM preliminary treatment in the device; Adopt the method that sprays that catalyst pulp is sprayed at the PEM surface and obtain CCM, and then obtain complete membrane electrode assembly with the gas diffusion layers combination.Patent CN200710044270.2, US5211984 and US6847518 obtain CCM through the method that shifts; Promptly at first catalyst pulp is coated onto on a kind of transfer medium; Then two transfer medium and PEM hot pressing that scribble the cathode and anode catalyst respectively; Obtain CCM after peeling off, obtain membrane electrode assembly again with after the gas diffusion layers assembling at last.In addition, patent CN200810024885.3, CN200810300046.X, CN200910184058.5, CN200910056321.2 etc. also all relate to the preparation method of CCM type membrane electrode assembly.But above-mentioned all patents all do not relate to the adhesion problem of gas diffusion layers and CCM Catalytic Layer in the membrane electrode assembly, and gas diffusion layers combines with the CCM Catalytic Layer whether good relationship is to membrane electrode assembly stability of structure, performance and life-span.
Summary of the invention
According to the technical problem of above-mentioned proposition, and membrane electrode assembly of a proton exchanging film fuel battery and preparation method thereof is provided.The present invention passes through at a spot of perfluorinated sulfonic resin of gas diffusion layers surface-coated; In the hot pressing process; Perfluorinated sulfonic resin bonds each other in gaseous diffusion laminar surface perfluorinated sulfonic resin and the Catalytic Layer, thereby effectively strengthens adhesion between gas diffusion layers and Catalytic Layer, also is the adhesion of gas diffusion layers and CCM; Thereby improve film electrode component of proton exchange film fuel battery structural stability in use, promote membrane electrode assembly property and prolong the membrane electrode assembly life-span.
The technological means that the present invention adopts is following:
The preparation method of the membrane electrode assembly of one proton exchanging film fuel battery is characterized in that comprising the steps:
S1. prepare mass concentration and be 0.1～1% perfluor sulfoacid resin solution, solvent is the mixed solution of water and normal propyl alcohol, and wherein, the mass ratio of water and normal propyl alcohol is 1:1 in the mixed solution;
S2. get an anode gas diffusion layer, on the surface of one of which side, apply the perfluor sulfoacid resin solution that is made by step S 1, the amount of the perfluorinated sulfonic resin of coating is 0.01～0.1mg/cm
2, oven dry obtains perfluorinated sulfonic resin layer I under 25 ℃～80 ℃; Get a cathode gas diffusion layer, on the surface of one of which side, apply the perfluor sulfoacid resin solution that is made by step S1, the amount of the perfluorinated sulfonic resin of coating is 0.01～0.1mg/cm
2, oven dry obtains perfluorinated sulfonic resin layer II under 25 ℃～80 ℃;
S3. get one one side and have anode catalyst layer; Opposite side has the PEM of cathode catalysis layer; Order according to said anode gas diffusion layer-said perfluorinated sulfonic resin layer I-said anode catalyst layer-said PEM-said cathode catalysis layer-said perfluorinated sulfonic resin layer II-said cathode gas diffusion layer is put, and obtains membrane electrode assembly at 140 ℃ of following hot pressings.
As preferably, the mass concentration of the perfluor sulfoacid resin solution among the step S1 is 0.3%.
As preferably, be applied to spraying process or spread coating among the step S2.
As preferably, the content of the perfluorinated sulfonic resin that applies among the step S2 is 0.05mg/cm
2
The invention still further relates to the membrane electrode assembly that a kind of preparation method of membrane electrode assembly of as described Proton Exchange Membrane Fuel Cells makes.
The present invention has adhesion, the raising membrane electrode assembly advantages such as structural stability, lifting membrane electrode assembly property and prolongation membrane electrode assembly life-span in use of effective enhancing gas diffusion layers and Catalytic Layer, adopts the membrane electrode assembly product percent of pass of this kind method preparation to promote about 3% simultaneously.This method technology is simple, amplifies easily and realizes.
The present invention can extensively promote in fields such as Proton Exchange Membrane Fuel Cellss for the foregoing reasons.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed explanation.
Fig. 1 is the structural representation of the membrane electrode assembly prepared by the method among the present invention.
Fig. 2 is that the content of the perfluorinated sulfonic resin prepared by the method among the present invention is 0.05mg/cm
2Membrane electrode process the test performance curve chart of membrane electrode assembly monocell.
Fig. 3 is that the content of the perfluorinated sulfonic resin prepared by the method among the present invention is 0.1mg/cm
2Membrane electrode process the test performance curve chart of membrane electrode assembly monocell.
Embodiment
The preparation method of the membrane electrode assembly of one proton exchanging film fuel battery comprises the steps:
S1. prepare mass concentration and be 0.1～1% perfluor sulfoacid resin solution, solvent is the mixed solution of water and normal propyl alcohol, and wherein, the mass ratio of water and normal propyl alcohol is 1:1 in the mixed solution, and the mass concentration of optimum full sulfonate resin solution is 0.3%;
S2. get an anode gas diffusion layer 7, on the surface of one of which side, apply the perfluor sulfoacid resin solution that is made by step S1, the amount of the perfluorinated sulfonic resin of coating is 0.01～0.1mg/cm
2, oven dry obtains perfluorinated sulfonic resin layer I 6 under 25 ℃～80 ℃; Get a cathode gas diffusion layer 5, on the surface of one of which side, apply the perfluor sulfoacid resin solution that is made by step S1, the amount of the perfluorinated sulfonic resin of coating is 0.01～0.1mg/cm
2, wherein optimum coated weight is 0.05mg/cm
2Oven dry obtains perfluorinated sulfonic resin layer II 4 under 25 ℃～80 ℃; Wherein, what apply employing is spraying process or spread coating, but is not limited to above several method, all can as long as can be evenly coated in the method for gaseous diffusion laminar surface; Cathode gas diffusion layer 5 and anode gas diffusion layer 7 adopt in addition is the carbon paper, charcoal step, carbon fiber felt etc. after handling through hydrophobic, and processing method is the processing method of the gas diffusion layers in the Proton Exchange Membrane Fuel Cells commonly used well known to those skilled in the art.
S3. get one one side and have anode catalyst layer 2; Opposite side has the PEM 1 of cathode catalysis layer 3; Order according to the said cathode gas diffusion layer 5 of the said perfluorinated sulfonic resin layer of the said anode gas diffusion layer 7-said cathode catalysis layer 3-of the said PEM 1-of the said anode catalyst layer 2-of I 6-said perfluorinated sulfonic resin layer II 4-is put, and obtains membrane electrode assembly (as shown in Figure 1) at 140 ℃ of following hot pressings; Wherein, the processing method of PEM is the processing method of the gas diffusion layers in the Proton Exchange Membrane Fuel Cells commonly used well known to those skilled in the art; Anode catalyst layer 2 all contains catalyst and perfluor acid resin with cathode catalyst layer 3, and catalyst wherein is preparation fuel battery cathode with proton exchange film Catalytic Layer well known to those skilled in the art and anode catalyst layer catalyst commonly used.
On the surface of anode gas diffusion layer of Proton Exchange Membrane Fuel Cells 7 and cathode gas diffusion layer 5, spray 0.05mg/cm
2The concrete steps that perfluorinated sulfonic resin prepares membrane electrode assembly are following:
S1. prepare mass concentration and be 0.3% perfluor sulfoacid resin solution; Concrete compound method is: take by weighing each 120g of deionized water and normal propyl alcohol and mix; Take by weighing perfluor sulfoacid resin solution (du pont company DE520 perfluoro sulfonic acid membrane resin solution; Mass concentration 5%) 15g and mix with water, normal propyl alcohol solution obtains mass concentration and is 0.3% perfluor sulfoacid resin solution;
S2. get two gas diffusion layers (gas diffusion layers adopts Japanese TORAY company's T GP-H-060 carbon fiber paper to process) that are of a size of 350mm*200mm as anode gas diffusion layer 7 and cathode gas diffusion layer 5, and anode gas diffusion layer 7 and cathode gas diffusion layer 5 are separately fixed in the stationary fixture of spraying equipment; Adopt the ultrasonic atomization flush coater in anode gas diffusion layer 7 and cathode gas diffusion layer 5 (microporous layers side; Be the side surface that the gaseous diffusion laminar surface has microcellular structure) surface spraying perfluor sulfoacid resin solution; The nozzle translational speed is set at 150mm/s, the about 6min of spray time; Room temperature was dried or 80 ℃ of oven dry for 25 ℃ after spraying was accomplished, and obtaining the perfluorinated sulfonic resin quantity for spray respectively is 0.05mg/cm
2Perfluorinated sulfonic resin layer I 6 and perfluorinated sulfonic resin layer II 4;
S3. put (as shown in Figure 1) according to the order of anode gas diffusion layer 7-perfluorinated sulfonic resin layer I 6-anode catalyst layer 2-PEM 1-cathode catalysis layer 3-perfluorinated sulfonic resin layer II 4-cathode gas diffusion layer 5; And obtain membrane electrode assembly at 140 ℃ of following hot pressings; In the hot pressing process; The perfluorinated sulfonic resin layer I 6 on anode gas diffusion layer 7 and cathode gas diffusion layer 5 surfaces and perfluorinated sulfonic resin layer II 4 respectively with anode catalyst layer 2 and cathode catalysis layer 3 in perfluorinated sulfonic resin bond each other, thereby effectively strengthen the adhesion of gas diffusion layers and CCM.
Membrane electrode assembly to obtaining through said method carries out the monocell performance test, and the monocell effective area is 34cm
2, battery temperature is 60 ℃, and air and hydrogen are saturated humidification, and air and Hydrogen Vapor Pressure are 0.1MPa, membrane electrode assembly monocell test performance curve chart (as shown in Figure 2), wherein solid line is gaseous diffusion laminar surface spraying 0.05mg/cm
2The membrane electrode assembly property curve of perfluorinated sulfonic resin, dotted line are the membrane electrode assembly property curve that the gaseous diffusion laminar surface does not spray perfluorinated sulfonic resin, gaseous diffusion laminar surface spraying 0.05mg/cm
2The membrane electrode assembly property of perfluorinated sulfonic resin promotes in middle and high current density interval to some extent, and current density is 1000mA/cm
2The time, cell voltage is 0.656V.
On the surface of anode gas diffusion layer of Proton Exchange Membrane Fuel Cells 7 and cathode gas diffusion layer 5, spray 0.1mg/cm
2The concrete steps that perfluorinated sulfonic resin prepares membrane electrode assembly are following:
S1. prepare mass concentration and be 1% perfluor sulfoacid resin solution; Concrete compound method is: take by weighing each 31g of deionized water and normal propyl alcohol and mix; Take by weighing perfluor sulfoacid resin solution (du pont company DE520 perfluoro sulfonic acid membrane resin solution; Mass concentration 5%) 15g and mix with water, normal propyl alcohol solution obtains mass concentration and is 1% perfluor sulfoacid resin solution;
S2. get two gas diffusion layers (gas diffusion layers adopts Japanese TORAY company's T GP-H-060 carbon fiber paper to process) that are of a size of 350mm*200mm as anode gas diffusion layer 7 and cathode gas diffusion layer 5, and anode gas diffusion layer 7 and cathode gas diffusion layer 5 are separately fixed in the stationary fixture of spraying equipment; Adopt the ultrasonic atomization flush coater in anode gas diffusion layer 7 and cathode gas diffusion layer 5 (microporous layers side; Be the side surface that the gaseous diffusion laminar surface has microcellular structure) surface spraying perfluor sulfoacid resin solution; The nozzle translational speed is set at 150mm/s, the about 4min of spray time; Room temperature was dried or 80 ℃ of oven dry for 25 ℃ after spraying was accomplished, and obtaining the perfluorinated sulfonic resin quantity for spray respectively is 0.1mg/cm
2Perfluorinated sulfonic resin layer I 6 and perfluorinated sulfonic resin layer II 4;
S3. put (as shown in Figure 1) according to the order of anode gas diffusion layer 7-perfluorinated sulfonic resin layer I 6-anode catalyst layer 2-PEM 1-cathode catalysis layer 3-perfluorinated sulfonic resin layer II 4-cathode gas diffusion layer 5; And obtain membrane electrode assembly at 140 ℃ of following hot pressings; In the hot pressing process; The perfluorinated sulfonic resin layer I 6 on anode gas diffusion layer 7 and cathode gas diffusion layer 5 surfaces and perfluorinated sulfonic resin layer II 4 respectively with anode catalyst layer 2 and cathode catalysis layer 3 in perfluorinated sulfonic resin bond each other, thereby effectively strengthen the adhesion of gas diffusion layers and CCM.
Membrane electrode assembly to obtaining through said method carries out the monocell performance test, and the monocell effective area is 34cm
2, battery temperature is 60 ℃, and air and hydrogen are saturated humidification, and air and Hydrogen Vapor Pressure are 0.1MPa, membrane electrode assembly monocell test performance curve chart (as shown in Figure 3), wherein solid line is gaseous diffusion laminar surface spraying 0.1mg/cm
2The membrane electrode assembly property curve of perfluorinated sulfonic resin, dotted line are the membrane electrode assembly property curve that the gaseous diffusion laminar surface does not spray perfluorinated sulfonic resin, gaseous diffusion laminar surface spraying 0.1mg/cm
2The membrane electrode assembly property of perfluorinated sulfonic resin promotes in middle and high current density interval to some extent, and current density is 1000mA/cm
2The time, cell voltage is 0.645V.
The above; Be merely the preferable embodiment of the present invention; But protection scope of the present invention is not limited thereto; Any technical staff who is familiar with the present technique field is equal to replacement or change according to technical scheme of the present invention and inventive concept thereof in the technical scope that the present invention discloses, all should be encompassed within protection scope of the present invention.
Claims (5)
1. the preparation method of the membrane electrode assembly of a proton exchanging film fuel battery is characterized in that comprising the steps:
S1. prepare mass concentration and be 0.1～1% perfluor sulfoacid resin solution, solvent is the mixed solution of water and normal propyl alcohol, and wherein, the mass ratio of water and normal propyl alcohol is 1:1 in the mixed solution;
S2. get an anode gas diffusion layer (7), on the surface of one of which side, apply the perfluor sulfoacid resin solution that is made by step S1, the amount of the perfluorinated sulfonic resin of coating is 0.01～0.1mg/cm
2, oven dry obtains perfluorinated sulfonic resin layer I (6) under 25 ℃～80 ℃; Get a cathode gas diffusion layer (5), on the surface of one of which side, apply the perfluor sulfoacid resin solution that is made by step S1, the amount of the perfluorinated sulfonic resin of coating is 0.01～0.1mg/cm
2, oven dry obtains perfluorinated sulfonic resin layer II (4) under 25 ℃～80 ℃;
S3. get one one side and have anode catalyst layer (2); Opposite side has the PEM (1) of cathode catalysis layer (3); Order according to said anode gas diffusion layer (7)-said perfluorinated sulfonic resin layer I (6)-said anode catalyst layer (2)-said PEM (1)-said cathode catalysis layer (3)-said perfluorinated sulfonic resin layer II (4)-said cathode gas diffusion layer (5) is put, and obtains membrane electrode assembly at 140 ℃ of following hot pressings.
2. the preparation method of the membrane electrode assembly of a proton exchanging film fuel battery according to claim 1 is characterized in that: the mass concentration of the perfluor sulfoacid resin solution among the step S1 is 0.3%.
3. the preparation method of the membrane electrode assembly of a proton exchanging film fuel battery according to claim 1 is characterized in that: be applied to spraying process or spread coating among the step S2.
4. the preparation method of the membrane electrode assembly of a proton exchanging film fuel battery according to claim 1 is characterized in that: the content of the perfluorinated sulfonic resin that applies among the step S2 is 0.05mg/cm
2
5. membrane electrode assembly that makes like the preparation method of the membrane electrode assembly of any described Proton Exchange Membrane Fuel Cells among the claim 1-4.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103474683A (en) * | 2013-09-24 | 2013-12-25 | 上海空间电源研究所 | Membrane electrode assembly for improving performance of integrated regenerative fuel cell and preparation method of membrane electrode assembly |
| CN108054415A (en) * | 2018-01-24 | 2018-05-18 | 南通百应能源有限公司 | A kind of membrane electrode assembly heat rolling bonding cutting technique |
| CN109921033A (en) * | 2017-12-13 | 2019-06-21 | 中国科学院大连化学物理研究所 | A kind of preparation method of fuel cell membrane electrode |
| CN111584880A (en) * | 2020-05-15 | 2020-08-25 | 无锡威孚高科技集团股份有限公司 | Low-platinum proton exchange membrane fuel cell membrane electrode and preparation method thereof |
| CN112713292A (en) * | 2020-12-25 | 2021-04-27 | 新源动力股份有限公司 | Hydrogen fuel cell membrane electrode assembly suitable for batch production and production process thereof |
| CN113861327A (en) * | 2021-09-10 | 2021-12-31 | 广州市乐基智能科技有限公司 | Perfluorosulfonic acid resin binder with high proton conductivity and mechanical properties and preparation method thereof |
| CN114204049A (en) * | 2021-12-03 | 2022-03-18 | 中国科学院大连化学物理研究所 | Preparation method of low platinum-loading proton exchange membrane fuel cell membrane electrode |
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| CN103474683A (en) * | 2013-09-24 | 2013-12-25 | 上海空间电源研究所 | Membrane electrode assembly for improving performance of integrated regenerative fuel cell and preparation method of membrane electrode assembly |
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| CN108054415A (en) * | 2018-01-24 | 2018-05-18 | 南通百应能源有限公司 | A kind of membrane electrode assembly heat rolling bonding cutting technique |
| CN111584880A (en) * | 2020-05-15 | 2020-08-25 | 无锡威孚高科技集团股份有限公司 | Low-platinum proton exchange membrane fuel cell membrane electrode and preparation method thereof |
| CN112713292A (en) * | 2020-12-25 | 2021-04-27 | 新源动力股份有限公司 | Hydrogen fuel cell membrane electrode assembly suitable for batch production and production process thereof |
| CN113861327A (en) * | 2021-09-10 | 2021-12-31 | 广州市乐基智能科技有限公司 | Perfluorosulfonic acid resin binder with high proton conductivity and mechanical properties and preparation method thereof |
| CN114204049A (en) * | 2021-12-03 | 2022-03-18 | 中国科学院大连化学物理研究所 | Preparation method of low platinum-loading proton exchange membrane fuel cell membrane electrode |
| CN114204049B (en) * | 2021-12-03 | 2023-11-10 | 中国科学院大连化学物理研究所 | Preparation method of membrane electrode of proton exchange membrane fuel cell with low platinum loading |
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Application publication date: 20121107 |