CN114976054A - Substrate layer, gas diffusion layer, preparation method and application thereof - Google Patents
Substrate layer, gas diffusion layer, preparation method and application thereof Download PDFInfo
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- CN114976054A CN114976054A CN202210658436.4A CN202210658436A CN114976054A CN 114976054 A CN114976054 A CN 114976054A CN 202210658436 A CN202210658436 A CN 202210658436A CN 114976054 A CN114976054 A CN 114976054A
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- 239000000758 substrate Substances 0.000 title claims abstract description 34
- 238000009792 diffusion process Methods 0.000 title claims abstract description 11
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 44
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 44
- 239000003054 catalyst Substances 0.000 claims abstract description 35
- 230000008021 deposition Effects 0.000 claims abstract description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical group [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 13
- PGFXOWRDDHCDTE-UHFFFAOYSA-N hexafluoropropylene oxide Chemical compound FC(F)(F)C1(F)OC1(F)F PGFXOWRDDHCDTE-UHFFFAOYSA-N 0.000 claims description 7
- 238000007740 vapor deposition Methods 0.000 claims description 7
- 239000000446 fuel Substances 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000007858 starting material Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 239000012298 atmosphere Substances 0.000 claims description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 239000010937 tungsten Substances 0.000 claims description 2
- 229920000049 Carbon (fiber) Polymers 0.000 abstract description 60
- 239000004917 carbon fiber Substances 0.000 abstract description 60
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 60
- 230000002209 hydrophobic effect Effects 0.000 abstract description 20
- -1 polytetrafluoroethylene Polymers 0.000 abstract description 6
- 239000012535 impurity Substances 0.000 abstract description 3
- 239000000376 reactant Substances 0.000 abstract description 3
- 239000012808 vapor phase Substances 0.000 abstract description 2
- 230000035699 permeability Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 44
- 238000000151 deposition Methods 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 10
- 238000012360 testing method Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 238000011056 performance test Methods 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 239000000839 emulsion Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000001291 vacuum drying Methods 0.000 description 4
- 238000005470 impregnation Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920002313 fluoropolymer Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229920001600 hydrophobic polymer Polymers 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8803—Supports for the deposition of the catalytic active composition
- H01M4/8807—Gas diffusion layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8825—Methods for deposition of the catalytic active composition
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inert Electrodes (AREA)
Abstract
The invention provides a substrate layer, a gas diffusion layer, a preparation method and application thereof. The preparation method of the substrate layer comprises the following steps: forming a PTFE layer deposited on the surface of the carbon paper by using a gas raw material under the action of a catalyst; the flow rate of the gas raw material is 15-25 SCCM; the temperature of the catalyst is 700-900 ℃. The method has the advantages that through the combined action of high temperature and a catalyst, under the condition that a reaction bin has no impurities, reactants are fully cracked and reacted to form PTFE (polytetrafluoroethylene); the PTFE hydrophobic layer is prepared on the carbon fiber paper by a vapor phase method, and the gas permeability is better, so that the content of polytetrafluoroethylene inside and outside the carbon fiber paper can be better ensured to be more balanced, and the problems of poor drainage capability, easy flooding and the like of partial positions of the carbon fiber paper are avoided; and further, carbon fiber paper with different PTFE contents can be prepared by controlling the deposition time, so that the hydrophobic property of the carbon fiber paper is adjusted, and a hydrophobic process with the optimal property can be obtained.
Description
Technical Field
The invention relates to a substrate layer, a gas diffusion layer, a preparation method and application thereof.
Background
Proton exchange membrane fuel cells are composed of membrane electrodes, bipolar plates, and corresponding stack components, wherein a Gas Diffusion Layer (GDL) in the membrane electrode is one of the key components affecting the performance of the fuel cell. The gas diffusion layer is mainly prepared by taking carbon fiber paper as a base material through the subsequent operations of dewatering and coating a microporous layer. The gas diffusion layer plays many important roles in a proton exchange membrane fuel cell, including supporting a catalyst layer, providing gas, electrons, a drainage channel and the like, and a reasonable carbon fiber paper hydrophobic process and a microporous layer preparation process are key steps for realizing good water and gas management in the fuel cell.
The common hydrophobic treatment mainly adopts fluorinated polymer with low surface energy to treat carbon fiber paper, wherein the fluorinated polymer comprises polytetrafluoroethylene, fluorinated asphalt, polyvinylidene fluoride and the like, the common treatment method is to debug the polymer and water or an organic solvent into emulsion or solution according to a certain proportion, soak the carbon fiber paper for a certain time, allow the hydrophobic polymer to be attached to the carbon fiber paper, and then obtain the carbon fiber paper coated with the hydrophobic agent through heat treatment.
In the impregnation hydrophobic treatment of the gas diffusion layer, since the carbon fiber paper generally has a thickness of about 200 μm, polymer molecules are difficult to be uniformly attached to the carbon fiber paper in the thickness direction during the impregnation process, and the phenomena of high surface content and low intermediate content are generally formed, thereby affecting the water drainage capability of the carbon fiber paper.
Disclosure of Invention
The invention provides a substrate layer, a gas diffusion layer, a preparation method and application thereof, aiming at overcoming the defects that polymer molecules in hydrophobic carbon fiber paper are difficult to be uniformly attached to the carbon fiber paper in the thickness direction, and the defects of high surface content and low intermediate content are generally formed in the prior art. The PTFE (polytetrafluoroethylene) in the substrate layer obtained by the preparation method is uniformly distributed on the carbon paper, the content of the polytetrafluoroethylene on the surface of the prepared substrate layer, namely the carbon fiber paper, is more balanced, and the problems of poor drainage capacity, easy flooding and the like of partial positions of the carbon fiber paper are solved.
The invention solves the technical problems through the following technical scheme:
the invention provides a preparation method of a substrate layer, which comprises the following steps: forming a PTFE layer deposited on the surface of the carbon paper by using a gas raw material under the action of a catalyst;
the flow rate of the gas raw material is 15-25 SCCM;
the temperature of the catalyst is 700-900 ℃.
In the present invention, as known to those skilled in the art from the preparation method, the gaseous raw material may be hexafluoropropylene oxide.
Wherein the purity of the hexafluoropropylene oxide is generally analytically pure.
In the present invention, the flow rate may be conventional in the art and generally refers to the flow rate into the reaction chamber. The reaction chamber is generally referred to as a reaction chamber in which the deposition is performed.
In the present invention, the catalyst may be conventional in the art and generally refers to a catalyst capable of catalyzing the gaseous feedstock to form PTFE, such as nickel metal and/or tungsten metal. Wherein, the nickel metal can be nickel wire and/or nickel alloy.
In the present invention, the catalyst is generally present in solid form.
In the present invention, the temperature of the catalyst is preferably 800 to 900 ℃. The catalyst is set to the reaction temperature of the gaseous starting material so that the gaseous starting material is capable of producing PTFE when passing through the catalyst, while leaving the reaction system without contacting the catalyst.
In the present invention, according to the method for producing the substrate layer, the catalyst is generally located above the carbon paper during the deposition, and the PTFE obtained by the reaction of the catalyst can be deposited on the surface of the carbon paper.
In the present invention, the deposition is generally referred to as vapor deposition, as known to those skilled in the art based on the preparation method.
In the present invention, the flow rate of the gas raw material is preferably 15 to 20SCCM during the deposition.
The inventor unexpectedly finds that in the process of development, in combination with the vapor deposition mode, the catalyst is creatively set to be in a high-temperature form, and the raw material is in contact with the high-temperature catalyst in a gas form, and the flow rate of the specific other raw material is controlled, so that a uniform PTFE layer can be formed on the surface of the carbon paper, and the thickness of the PTFE layer deposited on the surface of the carbon paper can be accurately controlled. If the flow rate is too high, the reactants cannot completely catalyze the reaction to PTFE, so that the deposit is impure, and if the flow rate is too low, the reaction is slow, which affects the uniformity and the mass content of the formed PTFE.
In the present invention, the deposition environment is preferably vacuum condition and/or inert atmosphere.
In the present invention, the deposition time can be conventional in the art, and is generally 10-60min, preferably 10min, 30min or 60 min.
In the present invention, the ratio of the mass of the PTFE layer to the total mass of the base layer may be 3 to 20 wt%, preferably 8 to 15 wt%, for example 10 wt%.
In the present invention, the thickness of the PTFE layer is not particularly limited, and a uniform coating layer may be formed on the surface of the carbon paper.
In the present invention, the temperature of the carbon paper is preferably room temperature. The temperature at room temperature is generally from 15 to 40 ℃. At room temperature, PTFE generated by the gas raw material through the catalyst can be solidified to obtain the PTFE layer when being deposited on the carbon paper.
The application further screens the catalyst the sedimentary environment with the temperature of catalyst, cooperation preceding the flow of gas raw materials, can obtain at high temperature and catalyst combined action, under the condition of reaction storehouse no impurity, at the even PTFE layer of surface deposition of carbon paper.
In the present invention, the carbon paper may be conventional in the art, and is typically a carbon fiber paper after being pretreated.
Wherein the carbon paper may be of a size conventional in the art, for example 20cm by 20 cm.
Wherein the thickness of the carbon paper can be 180-200 μm.
The pretreatment is generally to remove surface stains, and for example, the surface stains are washed with deionized water and acetone, and then dried.
The invention also provides a substrate layer which is prepared by the preparation method.
The invention also provides a gas diffusion layer which comprises the substrate layer and the microporous layer.
The invention also provides an application of the substrate layer as a substrate layer in a proton exchange membrane fuel cell.
On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.
The reagents and starting materials used in the present invention are commercially available.
The positive progress effects of the invention are as follows:
(1) the invention can lead the reactant to be cracked and reacted more fully into the product PTFE under the condition of no impurity in the reaction bin through the combined action of high temperature and catalyst;
(2) according to the invention, the PTFE hydrophobic layer is prepared on the carbon fiber paper by a vapor phase method, so that the content of polytetrafluoroethylene inside and outside the carbon fiber paper can be better ensured to be more balanced, and the problems of poor drainage capability, easy flooding and the like of partial positions of the carbon fiber paper are avoided; by adopting the method, the carbon fiber paper with different PTFE contents can be prepared by further controlling the deposition time, so that the hydrophobic property of the carbon fiber paper is adjusted, and the hydrophobic process with the optimal property can be obtained.
Drawings
FIG. 1 is a graph showing polarization curve tests of samples prepared in examples 1 to 3 and comparative example 1.
Fig. 2 is a schematic view of the contact resistance test of the sample prepared in example 1.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention. The experimental methods without specifying specific conditions in the following examples were selected according to the conventional methods and conditions, or according to the commercial instructions.
In the following examples and comparative examples:
the specification of the carbon fiber paper is 20cm by 20cm, the hexafluoropropylene oxide is analytically pure, and the equipment is CVD deposition equipment.
Example 1
And (3) taking the carbon fiber paper with the specification of 20cm by 20cm, respectively cleaning the carbon fiber paper in deionized water and acetone to remove surface stains, and then placing the carbon fiber paper in a vacuum drying oven to dry.
And placing the dried carbon fiber paper in a reaction chamber of vapor deposition equipment as a substrate, wherein the reaction chamber is in a vacuum environment, introducing air source hexafluoropropylene oxide into the reaction chamber at a flow rate of 20SCCM, and arranging a Ni wire as a catalyst between the air source and the substrate. And (3) heating the Ni wire to 800 ℃ under a deposition test, controlling the temperature of the carbon fiber paper to be room temperature, and depositing for 30min to obtain the substrate layer. The PTFE content of the carbon fiber paper is calculated to be about 10 wt% through the mass change of the carbon fiber paper.
The prepared hydrophobic carbon fiber paper is coated with a microporous layer, matched with a catalyst layer and assembled into a battery for performance test.
Example 2
And (3) taking the carbon fiber paper with the same area in the embodiment 1, respectively cleaning the carbon fiber paper in deionized water and acetone, removing surface stains, and then placing the carbon fiber paper in a vacuum drying box for drying.
And placing the dried carbon fiber paper in a reaction chamber of vapor deposition equipment as a substrate, wherein the reaction chamber is in a vacuum environment, introducing air source hexafluoropropylene oxide into the reaction chamber at a flow rate of 20SCCM, and arranging a Ni wire as a catalyst between the air source and the carbon fiber paper. And (3) heating the Ni wire to 800 ℃ under a deposition test, controlling the temperature of the carbon fiber paper to be room temperature, and depositing for 10min to obtain the substrate layer. The PTFE content of the carbon fiber paper is calculated to be about 3 wt% through the mass change of the carbon fiber paper.
The prepared hydrophobic carbon fiber paper is coated with a microporous layer, matched with a catalyst layer and assembled into a battery for performance test.
Example 3
And (3) taking the carbon fiber paper with the same area in the embodiment 1, respectively cleaning the carbon fiber paper in deionized water and acetone, removing surface stains, and then placing the carbon fiber paper in a vacuum drying box for drying.
And placing the dried carbon fiber paper in a reaction chamber of vapor deposition equipment as a substrate, wherein the reaction chamber is in a vacuum environment, introducing air source hexafluoropropylene oxide into the reaction chamber at a flow rate of 20SCCM, and arranging a Ni wire as a catalyst between the air source and the carbon fiber paper. In a deposition test, the Ni wire is heated to 800 ℃, the temperature of the carbon fiber paper is controlled to be room temperature, and the deposition time is 60min, so that the substrate layer is obtained. The PTFE content of the carbon fiber paper is calculated to be about 20 wt% through the mass change of the carbon fiber paper.
The prepared hydrophobic carbon fiber paper is coated with a microporous layer, matched with a catalyst layer and assembled into a battery for performance test.
Comparative example 1
And (3) taking the carbon fiber paper with the same area in the embodiment 1, respectively cleaning the carbon fiber paper in deionized water and acetone, removing surface stains, and then placing the carbon fiber paper in a vacuum drying box for drying. Preparing PTFE emulsion, wherein the content of PTFE in the emulsion is 1 percent, the content of water is 99 percent, placing the dried carbon fiber paper into the PTFE emulsion, dipping for 1 min/time, drying, calculating the feeding amount of PTFE each time, repeating dipping and drying treatment, controlling the content of PTFE to about 10 percent, placing the carbon fiber paper into a muffle furnace, and heating for 10min at 350 ℃.
The prepared hydrophobic carbon fiber paper is coated with a microporous layer, matched with a catalyst layer and assembled into a battery for performance test.
Effect example 1
1. Fig. 1 is a graph showing the test results of the samples prepared in examples 1 to 3 and comparative example 1. The carbon fiber papers prepared in examples 1 to 3 and comparative example 1 were assembled into corresponding small cells and subjected to a polarization curve performance test.
From the results, it can be seen that the sample prepared by the deposition method has better drainage performance, no obvious flooding occurs even at high electric density, and the sample has better performance compared with the sample prepared by the impregnation method with the same PTFE content. At the same time, changes in PTFE content significantly affect battery performance. When the content of PTFE reaches 20 wt%, the hydrophobic property of the obtained sample is good due to the large amount of the hydrophobic material, but the conductivity is poor due to the excessively high hydrophobic capacity, so that the electrochemical property is poor, and further research by the inventor speculates that the pores of the carbon fiber paper are blocked by the excessive PTFE, so that the water and gas transportation of the battery is not smooth, and the performance of the battery is seriously influenced; when the PTFE content is 3%, the water drainage ability is insufficient, and the battery performance is also affected.
2. The hydrophobic carbon fiber paper prepared in example 1 was tested for contact resistance using a contact resistance tester, and the test schematic is shown in fig. 2. The prepared hydrophobic carbon paper has a contact resistance of 5m Ω cm under a pressure of 1.6 MPa.
From the above, the inventors have creatively combined with the vapor deposition method to set the catalyst at a high temperature, and the raw material is brought into contact with the high temperature catalyst in the form of gas, and combined with a specific gas flow rate, not only the thickness of the PTFE layer deposited on the surface of the carbon paper can be accurately controlled, but also uniform PTFE can be formed.
Claims (10)
1. A method of preparing a substrate layer, comprising the steps of: forming a PTFE layer deposited on the surface of the carbon paper by using a gas raw material under the action of a catalyst;
the flow rate of the gas raw material is 15-25 SCCM;
the temperature of the catalyst is 700-900 ℃.
2. The method of making a substrate layer of claim 1 wherein the gaseous starting material is hexafluoropropylene oxide;
and/or the catalyst is nickel metal and/or tungsten metal.
3. The method of preparing a substrate layer of claim 1, wherein the catalyst is at a temperature of 800 ℃ to 900 ℃.
4. The method of forming a substrate layer of claim 1 wherein the deposition is vapor deposition;
and/or during deposition, the flow rate of the gas raw material is 15-20 SCCM.
5. The method of preparing a substrate layer of claim 1 wherein the environment of deposition is vacuum conditions and/or an inert atmosphere.
6. The method for preparing a substrate layer according to claim 1, wherein the deposition time is 10-60min, preferably 10min, 30min or 60 min.
7. Method for producing a substrate layer according to claim 1, characterised in that the ratio of the mass of the PTFE layer to the total mass of the substrate layer is 3-20 wt%, preferably 8-15 wt%, such as 10 wt%.
8. A substrate layer produced by the method for producing a substrate layer according to any one of claims 1 to 7.
9. A gas diffusion layer comprising a substrate layer as claimed in claim 8 and a microporous layer.
10. Use of a substrate layer as claimed in claim 8 as a substrate layer in a proton exchange membrane fuel cell.
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| CN202210658436.4A CN114976054A (en) | 2022-06-10 | 2022-06-10 | Substrate layer, gas diffusion layer, preparation method and application thereof |
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Citations (12)
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|---|---|---|---|---|
| US5888591A (en) * | 1996-05-06 | 1999-03-30 | Massachusetts Institute Of Technology | Chemical vapor deposition of fluorocarbon polymer thin films |
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| CN109037724A (en) * | 2018-07-26 | 2018-12-18 | 成都新柯力化工科技有限公司 | A kind of film inhibiting fuel battery gas diffusion layer water logging |
| CN112442920A (en) * | 2020-12-02 | 2021-03-05 | 天津工业大学 | Preparation method of hydrophobic carbon paper |
| CN113270593A (en) * | 2021-04-22 | 2021-08-17 | 上海唐锋能源科技有限公司 | Membrane electrode for proton exchange membrane fuel cell and preparation method thereof |
| JP2021163668A (en) * | 2020-04-01 | 2021-10-11 | 株式会社豊田中央研究所 | Fuel cell gas diffusion layer |
| CN113831303A (en) * | 2021-09-15 | 2021-12-24 | 浙江大学衢州研究院 | Method for preparing hexafluoropropylene oxide by epoxidation of hexafluoropropylene |
| CN114164444A (en) * | 2021-12-02 | 2022-03-11 | 江西德合医疗器械有限公司 | Gas diffusion layer structure of membrane electrode of electrochemical oxygen generator and preparation method |
| CN117673377A (en) * | 2023-12-15 | 2024-03-08 | 湖南隆深氢能科技有限公司 | Preparation method of carbon paper for fuel cell gas diffusion layer |
-
2022
- 2022-06-10 CN CN202210658436.4A patent/CN114976054A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5888591A (en) * | 1996-05-06 | 1999-03-30 | Massachusetts Institute Of Technology | Chemical vapor deposition of fluorocarbon polymer thin films |
| WO2006063611A1 (en) * | 2004-12-17 | 2006-06-22 | Pirelli & C. S.P.A. | Proton exchange fuel cell |
| CN101060177A (en) * | 2006-03-20 | 2007-10-24 | 通用汽车环球科技运作公司 | Diffusion media with vapor deposited fluorocarbon polymer |
| CN102265439A (en) * | 2009-10-13 | 2011-11-30 | 松下电器产业株式会社 | Fuel cell and method for manufacturing same |
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| JP2021163668A (en) * | 2020-04-01 | 2021-10-11 | 株式会社豊田中央研究所 | Fuel cell gas diffusion layer |
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| CN117673377A (en) * | 2023-12-15 | 2024-03-08 | 湖南隆深氢能科技有限公司 | Preparation method of carbon paper for fuel cell gas diffusion layer |
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