CN113809347A - Corrosion-resistant coating of fuel cell metal bipolar plate and preparation process thereof - Google Patents
Corrosion-resistant coating of fuel cell metal bipolar plate and preparation process thereof Download PDFInfo
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- CN113809347A CN113809347A CN202111055053.XA CN202111055053A CN113809347A CN 113809347 A CN113809347 A CN 113809347A CN 202111055053 A CN202111055053 A CN 202111055053A CN 113809347 A CN113809347 A CN 113809347A
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- 238000005260 corrosion Methods 0.000 title claims abstract description 76
- 230000007797 corrosion Effects 0.000 title claims abstract description 73
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 62
- 239000002184 metal Substances 0.000 title claims abstract description 62
- 239000000446 fuel Substances 0.000 title claims abstract description 34
- 239000011248 coating agent Substances 0.000 title claims abstract description 31
- 238000000576 coating method Methods 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000000084 colloidal system Substances 0.000 claims abstract description 29
- 239000000853 adhesive Substances 0.000 claims abstract description 16
- 230000001070 adhesive effect Effects 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229920001940 conductive polymer Polymers 0.000 claims abstract description 5
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 4
- 239000000919 ceramic Substances 0.000 claims abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- -1 polytetrafluoroethylene Polymers 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 235000011837 pasties Nutrition 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 2
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 2
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 claims 15
- 239000011247 coating layer Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 16
- 239000000758 substrate Substances 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 abstract description 2
- 238000004381 surface treatment Methods 0.000 abstract 1
- 239000010408 film Substances 0.000 description 11
- 230000008569 process Effects 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000000840 electrochemical analysis Methods 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002161 passivation Methods 0.000 description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007705 chemical test Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000007704 transition Effects 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
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0223—Composites
- H01M8/0228—Composites in the form of layered or coated products
-
- 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
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0206—Metals or alloys
-
- 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
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/023—Porous and characterised by the material
- H01M8/0232—Metals or alloys
-
- 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
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/023—Porous and characterised by the material
- H01M8/0241—Composites
- H01M8/0245—Composites in the form of layered or coated products
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The invention relates to a corrosion-resistant coating of a fuel cell metal bipolar plate and a preparation process thereof, wherein the corrosion-resistant coating comprises a conductive adhesive colloid layer coated on the surface of a metal polar plate and a strong corrosion-resistant layer arranged on the outer surface of the conductive adhesive colloid layer, and the strong corrosion-resistant layer is one of a conductive polymer sheet, a conductive ceramic sheet or a carbon-based film. The invention utilizes the outer layer strong corrosion resistant layer to effectively prevent the metal bipolar plate from being corroded by the fuel cell environment, utilizes the inner side high-conductivity colloid layer to combine the film and the substrate, and simultaneously effectively reduces the contact resistance between the film and the substrate interface due to the existence of the high-conductivity colloid layer. The metal bipolar plate is subjected to surface treatment by a bonding method, and the strong corrosion-resistant layer can be prepared independently, so that the problem of an interface between the outer strong corrosion-resistant layer and the metal polar plate is not required to be considered, the selection range of the corrosion-resistant protective film layer and the metal polar plate material is greatly expanded, the metal bipolar plate can be suitable for metal bipolar plates made of various materials after the strong corrosion-resistant layer is selected, and the adaptability of a single film layer to different metal polar plates is improved.
Description
Technical Field
The invention belongs to the technical field of fuel cells, and relates to a corrosion-resistant coating of a metal bipolar plate of a fuel cell and a preparation process thereof.
Background
Proton Exchange Membrane Fuel Cells (PEMFC) are a type of Fuel Cell, which uses hydrogen and oxygen respectively introduced into the inside as energy sources to generate electricity through redox reaction for supplying power. The power generation process does not involve Carnot cycle, so that the energy utilization rate is high, no pollution is caused, the working temperature is low, the starting speed is high, and the energy generation system is considered to be a novel energy source which is most suitable for being applied to vehicles in recent years.
Key components of PEMFCs include Membrane Electrodes (MEAs), end plates, and bipolar plates, etc. During the operation of the PEMFC, the bipolar plate plays multiple roles including supporting the MEA, conducting current, conducting gas, removing reaction heat, etc., and its mass and volume respectively account for over 70% and 80% of the total fuel cell. Therefore, the bipolar plate should have good mechanical properties, electrical conductivity, thermal conductivity, and the like, and the corrosion resistance of the bipolar plate is also important because the internal working environment of the fuel cell contains sulfuric acid (pH 2-3) and hydrofluoric acid (0.1ppm) and the working temperature is 80 ℃.
In recent years, a series of defects of high processing cost, low yield and the like of the graphite bipolar plate are gradually replaced by the metal bipolar plate, the metal bipolar plate has thin volume, high mechanical strength and convenient control of processing technology, and has very wide application prospect, however, the common metal bipolar plate usually has severe corrosion in a harsh battery environment, the working efficiency of the fuel cell is greatly reduced, and the requirement of long-term working cannot be met, so that the preparation of the surface film layer of the metal bipolar plate becomes the mainstream direction for improving the corrosion resistance of the metal bipolar plate of the fuel cell.
At present, the selection aspect of the material of the metal pole plate and the material of the protective film layer is relatively fixed, the selection range of the material of the metal pole plate and the material of the film layer is small, the selected corrosion-resistant film layer and the preparation method thereof are usually only suitable for specific metal pole plates, the interface transition problem between the film layer and a base body is considered, the material of the film layer and the preparation method of the film layer are usually required to be adjusted according to different metal characteristics when the material of the metal pole plate is changed, and the process is complicated.
Disclosure of Invention
The invention aims to provide a corrosion-resistant coating of a fuel cell metal bipolar plate and a preparation process thereof.
The purpose of the invention can be realized by the following technical scheme:
one of the technical schemes of the invention provides a corrosion-resistant coating of a fuel cell metal bipolar plate, which comprises a conductive adhesive colloid layer coated on the surface of a metal polar plate and a strong corrosion-resistant layer arranged on the outer surface of the conductive adhesive colloid layer, wherein the strong corrosion-resistant layer is one of a conductive polymer sheet, a conductive ceramic sheet or a carbon-based film.
Further, the conductive polymer sheet is a polytetrafluoroethylene sheet.
Further, the conductive adhesive colloid layer is a copper paste layer. Generally, copper paste is not strong in corrosion resistance and the like and is rarely used as a connecting layer in a fuel cell, and the invention can effectively isolate the permeation of corrosive media by arranging a strong corrosion-resistant layer on the outer layer for corrosion prevention, thereby avoiding the corrosion of the copper paste, enabling the adoption of the low-cost copper paste as a conductive adhesive colloid layer and simultaneously fully utilizing the conductivity of the copper paste to conduct current.
Further, the thickness of the conductive adhesive colloid layer is less than 30 μm.
Furthermore, the thickness of the strong corrosion-resistant layer is 20-100 mu m.
Further, the over-plane resistance of the strong corrosion-resistant layer should be lower than 15m omega cm2(ASTM C-611)。
Furthermore, the metal pole plate is made of stainless steel, aluminum alloy, magnesium alloy, titanium alloy or copper alloy.
The second technical scheme of the invention provides a preparation method of a corrosion-resistant coating of a fuel cell metal bipolar plate, which comprises the following steps:
(1) mechanically polishing a metal polar plate, ultrasonically cleaning the metal polar plate by adopting an organic solvent, and then coating a conductive viscous colloid on the surface of the metal polar plate to obtain an uncured pasty conductive viscous colloid layer;
(2) cutting the strong corrosion-resistant layer to a specified shape, attaching the strong corrosion-resistant layer to the pasty conductive adhesive colloid layer, and applying pressure to make the strong corrosion-resistant layer fully contact with the conductive adhesive colloid layer;
(3) and (3) placing the metal polar plate in an oven for curing, and maintaining the applied pressure to finish the preparation of the corrosion-resistant coating on the fuel cell metal bipolar plate.
Further, in the step (2) and the step (3), the applied pressure is 10-100N.
Further, in the step (3), the curing temperature is 120-160 ℃, and the curing time is 1-2 hours.
In the invention, the strong corrosion resistant layer is used as a key barrier for protecting the metal polar plate, the corrosion resistance and the thickness of the strong corrosion resistant layer cannot be too low, otherwise, the failure risk of the bipolar plate is increased, and meanwhile, the thickness of the strong corrosion resistant layer does not need to be too high under the condition of considering the cost, otherwise, the production cost is increased; the self-corrosion current density of the strong corrosion-resistant layer and the corrosion current density under the anode potential directly determine the corrosion speed of the whole metal polar plate and the service life of the metal polar plate, so that the lower the self-corrosion current density and the corrosion current density under the anode potential, the better the self-corrosion current density and the corrosion current density under the anode potential are; a strong corrosion resistant layer requires a certain conductivity to conduct the current, which affects the output of the fuel cell, so that the lower its in-plane resistance the better.
Compared with the prior art, the invention has the following advantages:
(1) the preparation method utilizes a bonding process to prepare the surface protective coating of the metal bipolar plate, utilizes the conductive colloid to apply the strong corrosion resistant layer on the surface of the metal bipolar plate, effectively avoids the metal bipolar plate from contacting with a corrosive medium in a fuel cell environment, and simultaneously utilizes the excellent conductivity of the conductive colloid to obviously reduce the resistance at a film-substrate interface;
(2) large-scale instruments and equipment are not required;
(3) interface problems do not need to be considered, and the selection range of film layer materials is wide;
(4) after the corrosion-resistant layer is selected, the method is suitable for metal bipolar plates made of various materials, so that the matching selection between the film layer material and the metal bipolar plate is more diversified;
(5) the preparation process is simple and quick.
Drawings
FIG. 1 is a schematic structural view of a corrosion-resistant coating in example 1;
FIG. 2 is the pH 3 at 80 ℃ H for the sample of example 12SO4Current density curve of 0.84v (vs she) constant potential polarization 10000s in (0.1ppm HF containing) solution;
FIG. 3 is the results of the contact resistance test of the sample in example 1;
FIG. 4 shows the results of electrochemical tests on the sample obtained in comparative example 1;
fig. 5 shows the results of electrochemical tests on the sample obtained in comparative example 2.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
In the following examples, the metal plate material used was 316L stainless steel; the conductive colloid used was a commercially available product: shenzhen Xiatch science and technology Limited, model number S-Y3001 (which is copper paste).
The remainder, unless otherwise specified, indicates that they are all conventional commercial products or conventional materials in the art.
Example 1:
the embodiment provides a bonding preparation process of a corrosion-resistant coating for a metal bipolar plate of a fuel cell, which comprises the following steps:
1) pretreating a metal polar plate: and mechanically polishing the polar plate, and carrying out ultrasonic vibration cleaning on the pure magnesium bipolar plate by sequentially using acetone and absolute ethyl alcohol.
2) Preparation of the conductive colloid layer 2 (i.e., conductive adhesive colloid layer): coating the conductive colloid on the surface of the metal polar plate 1 by adopting a blade coating blade to obtain an uncured conductive colloid layer 2, wherein the coating thickness is 50 microns;
3) strong corrosion resistant layer: cutting a polytetrafluoroethylene sheet with a thickness of 20 μm to 1cm2And attaching the conductive colloid layer 2 on the surface to form a strong corrosion-resistant layer 3.
4) A pressure of 10 to 100N (20N is selected in the present embodiment) is applied to the surface of the strong corrosion resistant layer 3 to make the conductive colloid layer 2 and the strong corrosion resistant layer 3 fully contact.
5) The metal pole plate 1 coated with the anticorrosive coating is placed into a drying oven, the temperature is set to 120-160 ℃ (130 ℃ in the embodiment) and the temperature is kept for 1-2 hours (1.5 hours in the embodiment), so that the conductive colloid layer 2 is completely cured, the strong corrosion-resistant layer 3 is bonded with the metal pole plate 1, and the structure obtained after the coating is prepared is shown in figure 1.
6) The prepared coating is subjected to performance characterization, the electrochemical test result in the fuel cell environment is shown in figure 2, and it can be seen from the figure that the corrosion current density after the stable coating is lower than 5 multiplied by 10-8uA/cm2The corrosion performance requirement index of the United states energy department for the fuel cell bipolar plate in 2020 is met.
Meanwhile, the test result of the contact resistance of the coating is shown in fig. 3, and it can be seen from the figure that the contact resistance is remarkably reduced with the increase of the pressure, and 9m Ω · cm is obtained under 1.4Mpa2Meets the requirement index of the United states energy department of 2020 on the contact resistance of the bipolar plate of the fuel cell, namely not more than 10m omega cm under the pressure of 1.4MPa2。
Comparative example 1:
compared with the example 1, most of the materials are the same, except that the metal plate material is replaced by the aluminum alloy, fig. 4 shows the electrochemical test result under the same electrochemical environment, and it can be seen that the corrosion current density has not changed significantly, and thus it can be seen that the performance can still be exerted even if the metal plate material is replaced after the corrosion resistant film layer is selected.
Comparative example 2:
compared with example 1, the method is mostly the same except that the strong corrosion resistant layer is replaced by a tantalum foil with the thickness of 20 μm, and FIG. 5 shows the electricity of the method under the same electrochemical environmentAs a result of chemical tests, it was found that the corrosion current density was also lower than 5X 10 which is required in the energy department- 8uA/cm2. However, it should be noted that, in the case of tantalum foil and the like, the resistance is easily increased due to passivation in the subsequent use process, thereby affecting the working efficiency of the bipolar plate, while the polytetrafluoroethylene sheet used in example 1 is not a metal material, and thus passivation and the like are not generated.
Example 2:
compared with example 1, the method is mostly the same except that the polytetrafluoroethylene sheet is changed into a conductive ceramic sheet with the same thickness.
Example 3:
compared with example 1, the same is mostly true except that the polytetrafluoroethylene sheet is changed to a carbon-based thin film of the same thickness.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
1. The corrosion-resistant coating of the fuel cell metal bipolar plate is characterized by comprising a conductive adhesive colloid layer coated on the surface of a metal polar plate and a strong corrosion-resistant layer arranged on the outer surface of the conductive adhesive colloid layer, wherein the strong corrosion-resistant layer is one of a conductive polymer sheet, a conductive ceramic sheet or a carbon-based film.
2. The corrosion-resistant coating for a fuel cell metallic bipolar plate of claim 1, wherein said conductive polymer sheet is a polytetrafluoroethylene sheet.
3. The corrosion-resistant coating for a fuel cell metallic bipolar plate of claim 1, wherein said electrically conductive adhesive gel layer is a copper paste layer.
4. The corrosion-resistant coating for a fuel cell metallic bipolar plate according to claim 1, wherein said electrically conductive adhesive gel layer has a thickness of less than 30 μm.
5. The corrosion-resistant coating of a fuel cell metal bipolar plate according to claim 1, wherein the thickness of the strong corrosion-resistant layer is 20 to 100 μm.
6. The corrosion-resistant coating for a metal bipolar plate of a fuel cell as claimed in claim 1, wherein the high corrosion-resistant layer has an over-plane resistance of less than 15m Ω -cm2。
7. The corrosion-resistant coating of a fuel cell metal bipolar plate according to claim 1, wherein the metal plate is made of stainless steel, aluminum alloy, magnesium alloy, titanium alloy or copper alloy.
8. The method for preparing a corrosion-resistant coating layer of a fuel cell metal bipolar plate according to any one of claims 1 to 7, comprising the steps of:
(1) mechanically polishing a metal polar plate, ultrasonically cleaning the metal polar plate by adopting an organic solvent, and then coating a conductive viscous colloid on the surface of the metal polar plate to obtain an uncured pasty conductive viscous colloid layer;
(2) cutting the strong corrosion-resistant layer to a specified shape, attaching the strong corrosion-resistant layer to the pasty conductive adhesive colloid layer, and applying pressure to make the strong corrosion-resistant layer fully contact with the conductive adhesive colloid layer;
(3) and (3) placing the metal polar plate in an oven for curing, and maintaining the applied pressure to finish the preparation of the corrosion-resistant coating on the fuel cell metal bipolar plate.
9. The method for preparing the corrosion-resistant coating of the metal bipolar plate of the fuel cell as claimed in claim 8, wherein the pressure applied in the steps (2) and (3) is 10-100N.
10. The method for preparing the corrosion-resistant coating of the fuel cell metal bipolar plate according to claim 8, wherein in the step (3), the curing temperature is 120-160 ℃ and the curing time is 1-2 h.
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| CN202111055053.XA CN113809347A (en) | 2021-09-09 | 2021-09-09 | Corrosion-resistant coating of fuel cell metal bipolar plate and preparation process thereof |
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| CN202111055053.XA CN113809347A (en) | 2021-09-09 | 2021-09-09 | Corrosion-resistant coating of fuel cell metal bipolar plate and preparation process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116174546A (en) * | 2023-04-28 | 2023-05-30 | 佛山高谱机械科技有限公司 | Pipe thermal bending method based on composite action of electric conduction and self lubrication |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101488570A (en) * | 2008-01-16 | 2009-07-22 | 中国科学院金属研究所 | Surface treatment process for proton exchange film fuel cell stainless steel bi-polar plate |
| CN109904479A (en) * | 2019-02-22 | 2019-06-18 | 佛山科学技术学院 | A kind of composite anti-corrosion fuel battery metal double polar plate and preparation method thereof |
| CN111900426A (en) * | 2020-07-29 | 2020-11-06 | 上海交通大学 | Fuel cell bipolar plate anticorrosive coating and preparation method thereof |
| CN112310429A (en) * | 2020-10-29 | 2021-02-02 | 上海交通大学 | Corrosion-resistant coating for fuel cell bipolar plate and preparation method thereof |
| CN212676307U (en) * | 2020-08-10 | 2021-03-09 | 四川大学 | Porous metal composite bipolar plate for fuel cell |
-
2021
- 2021-09-09 CN CN202111055053.XA patent/CN113809347A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101488570A (en) * | 2008-01-16 | 2009-07-22 | 中国科学院金属研究所 | Surface treatment process for proton exchange film fuel cell stainless steel bi-polar plate |
| CN109904479A (en) * | 2019-02-22 | 2019-06-18 | 佛山科学技术学院 | A kind of composite anti-corrosion fuel battery metal double polar plate and preparation method thereof |
| CN111900426A (en) * | 2020-07-29 | 2020-11-06 | 上海交通大学 | Fuel cell bipolar plate anticorrosive coating and preparation method thereof |
| CN212676307U (en) * | 2020-08-10 | 2021-03-09 | 四川大学 | Porous metal composite bipolar plate for fuel cell |
| CN112310429A (en) * | 2020-10-29 | 2021-02-02 | 上海交通大学 | Corrosion-resistant coating for fuel cell bipolar plate and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| TAO YING等: "A novel high corrosion-resistant polytetrafluoroethylene/carbon cloth/Ag coating on magnesium alloys as bipolar plates for light-weight proton exchange membrane fuel cells", 《JOURNAL OF POWER SOURCES》 * |
| 应韬等: "燃料电池用镁合金双极板的设计与制备", 《第十一届全国腐蚀与防护大会论文摘要集》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116174546A (en) * | 2023-04-28 | 2023-05-30 | 佛山高谱机械科技有限公司 | Pipe thermal bending method based on composite action of electric conduction and self lubrication |
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Application publication date: 20211217 |