CN114536751A - Method for preparing formed bipolar plate by 3DP - Google Patents
Method for preparing formed bipolar plate by 3DP Download PDFInfo
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- CN114536751A CN114536751A CN202210017879.5A CN202210017879A CN114536751A CN 114536751 A CN114536751 A CN 114536751A CN 202210017879 A CN202210017879 A CN 202210017879A CN 114536751 A CN114536751 A CN 114536751A
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- bipolar plate
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000007639 printing Methods 0.000 claims abstract description 34
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000000758 substrate Substances 0.000 claims abstract description 23
- 239000000853 adhesive Substances 0.000 claims abstract description 18
- 230000001070 adhesive effect Effects 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 239000007822 coupling agent Substances 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 239000006229 carbon black Substances 0.000 claims abstract description 5
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 5
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 5
- 239000002245 particle Substances 0.000 claims abstract description 5
- 239000011248 coating agent Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims abstract description 4
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 4
- 239000000843 powder Substances 0.000 claims description 21
- 230000033001 locomotion Effects 0.000 claims description 10
- 238000005485 electric heating Methods 0.000 claims description 7
- 239000011550 stock solution Substances 0.000 claims description 7
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 3
- 239000005011 phenolic resin Substances 0.000 claims description 3
- 229920001568 phenolic resin Polymers 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 3
- 229920002554 vinyl polymer Polymers 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 abstract description 12
- 239000010439 graphite Substances 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 6
- 238000000465 moulding Methods 0.000 description 10
- 238000011161 development Methods 0.000 description 7
- 108010066057 cabin-1 Proteins 0.000 description 4
- 108010066278 cabin-4 Proteins 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 238000010146 3D printing Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/165—Processes of additive manufacturing using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- 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
- H01M8/0213—Gas-impermeable carbon-containing materials
-
- 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
- H01M8/0226—Composites in the form of mixtures
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Composite Materials (AREA)
Abstract
The invention provides a method for preparing a molded bipolar plate by using 3DP, and relates to the field of battery pole pieces. The method for preparing the formed bipolar plate by 3DP comprises the following steps: s1: mixing graphite powder with a particle size of 200 meshes or less with carbon black, carbon nanotubes and a coupling agent to obtain a printing substrate for later use; s2: uniformly paving a printing substrate, then coating a thermosetting adhesive on the surface of the paved printing substrate according to the size of a produced pole piece, and simultaneously heating to cure the adhesive; s3: s2 is repeated until a complete pole piece is obtained. The process of manufacturing the bipolar plate does not need a die or a jig, so that the time for manufacturing the die or the jig and the cost for manufacturing the die or the jig are saved, the efficiency for manufacturing the graphite bipolar plate is improved, and a large amount of cost is reduced.
Description
Technical Field
The invention relates to the technical field of battery pole pieces, in particular to a method for preparing a molded bipolar plate by using 3 DP.
Background
At present, the bipolar plates used in flow batteries and fuel cells are totally three types, namely graphite bipolar plates, metal bipolar plates and composite graphite bipolar plates. The graphite bipolar plate has low density, good corrosion resistance and electrical conductivity, and can meet the requirement of long-term stable operation of the flow battery and the fuel battery, so that most of manufacturers of the flow battery and the fuel battery use the graphite bipolar plate.
The current processing methods of the graphite bipolar plate are roughly divided into three types: mixing graphite powder and resin, performing mixed hot-press molding in a die, performing flexible graphite punch molding, and placing a molded graphite plate on an engraving machine to engrave a runner. The three methods can manufacture qualified graphite bipolar plates, but have certain defects, the two methods of hot press forming and punch forming need to use a die, and the whole die is scrapped due to redesign of a little small appearance size of the bipolar plate in the development process, so that the development cost is greatly improved, and the die period is long, so that the development progress is influenced. Specific tooling is needed for processing the graphite bipolar plate by the engraving machine, once the size of the graphite bipolar plate is changed in the development process, the tooling can be scrapped, the tooling is required to be reworked, the labor and the time are wasted, the development cost is increased, and the development period is prolonged. Meanwhile, the common defects of the three methods are that a coolant flow channel cannot be processed, and the bipolar plate cannot be formed at one time. The method of assembling and bonding two single plates is required to manufacture the bipolar plate with the inner flow channel, but the requirement for bonding technology development is increased invisibly. Therefore, the temperature change range of the flow battery and the fuel battery, the pressure resistance of the water flow channel and the like are limited.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a method for preparing a formed bipolar plate by 3DP, which solves the defects in hot press forming, punch forming and engraving forming.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a method of making a shaped bipolar plate by 3DP comprising the steps of:
s1: mixing graphite powder with a particle size of 200 meshes or less with carbon black, carbon nanotubes and a coupling agent to obtain a printing substrate for later use;
s2: uniformly paving a printing substrate, then coating a thermosetting adhesive on the surface of the paved printing substrate according to the size of a produced pole piece, and simultaneously heating to cure the adhesive;
s3: s2 is repeated until a complete pole piece is obtained.
Preferably, the coupling agent is organic silicon or carbonate.
Preferably, the adhesive comprises the following components in parts by weight: 1-10 parts of epoxy resin, 1-10 parts of phenolic resin and 1-10 parts of vinyl epoxy resin.
Preferably, the heating temperature in S2 is 120-220 ℃.
The printing device provided by the method for preparing the formed bipolar plate by 3DP comprises a powder cabin and a forming cabin which are arranged side by side, wherein a liftable powder platform is arranged inside the powder cabin, a liftable forming platform is arranged inside the forming cabin, scrapers which move linearly are arranged at the upper ends of the powder cabin and the forming cabin, and an injection head with three linear motion degrees of freedom is arranged above the forming platform.
Preferably, the printing device further comprises a liquid storage barrel, a conveying pipe is fixedly connected to the upper end of the liquid storage barrel, and the other end of the conveying pipe is connected with the injection head.
Preferably, the inside of the forming chamber is provided with an electric heating device.
(III) advantageous effects
The invention provides a method for preparing a molded bipolar plate by 3 DP. The method has the following beneficial effects:
1. according to the invention, a die and a jig are not needed in the process of manufacturing the bipolar plate, so that the time for manufacturing the die or the jig and the cost for manufacturing the die or the jig are saved, the efficiency for manufacturing the graphite bipolar plate is improved, and a large amount of cost is reduced.
2. Based on the advantages of 3D printing, the invention can manufacture the inner flow channel in the production of the polar plate, and can be formed at one time, thereby saving the cost for bonding and greatly improving the efficiency.
3. According to the invention, the high-precision 3D printing equipment is adopted, so that the precision of the processing flow channel can be improved and higher, and the problem of processing tolerance of the traditional process is avoided.
Drawings
Fig. 1 is a schematic side view of a printer according to the present invention.
Wherein, 1, a powder cabin; 2. a scraper; 3. a powder platform; 4. a molding cabin; 5. a forming platform; 6. a liquid storage barrel; 7. a delivery pipe; 8. an ejection head.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
the embodiment of the invention provides a method for preparing a formed bipolar plate by 3DP, which comprises the following steps:
s1: mixing graphite powder of 200 meshes or less with carbon black, carbon nanotubes and a coupling agent to obtain a printing substrate for later use, wherein the particle diameters of the carbon black, the carbon nanotubes and the coupling agent are less than or equal to the particle diameter of the graphite powder to ensure the uniformity of the printing substrate, the coupling agent adopts organic silicon or carbonic ester, and the coupling agent is adopted to modify materials so that the printing substrate is not agglomerated, namely the printing substrate can be uniformly paved into a thin layer of 0.02-0.3 mm;
s2: uniformly paving a printing substrate, and then coating a thermosetting adhesive on the surface of the paved printing substrate according to the size of a produced pole piece, wherein the adhesive comprises the following components in parts by weight: 1-10 parts of epoxy resin, 1-10 parts of phenolic resin and 1-10 parts of vinyl epoxy resin, and heating to cure the adhesive at the temperature of 120-220 ℃;
s3: s2 is repeated until a complete pole piece is obtained.
As shown in fig. 1, the printing device provided by the method for preparing the molded bipolar plate by 3DP comprises a powder cabin 1 and a molding cabin 4 which are arranged side by side, wherein the powder cabin 1 is used for storing a printing substrate, a liftable powder platform 3 is arranged inside the powder cabin 1, the printing substrate is arranged at the upper end of the powder platform 3, along with the rising of the powder platform 3, the printing substrate is lifted, a liftable molding platform 5 is arranged inside the molding cabin 4, the printing substrate is laid on the molding platform 5, before each layer is laid, the molding platform 5 descends once, and the distance is the thickness of the laid layer.
The upper ends of the powder cabin 1 and the forming cabin 4 are provided with the scrapers 2 which move linearly, the scrapers 2 act to scrape the printing substrate from the powder platform 3 to the forming platform 5, transfer is achieved, and in the movement process of the scrapers 2, the laying uniformity needs to be controlled.
The top of shaping platform 5 sets up the shower nozzle 8 that has three rectilinear motion degree of freedom, and shower nozzle 8 is used for spouting the adhesive, and three rectilinear motion degree of freedom makes shower nozzle 8 have the ability of drawing the figure on shaping platform 5, and the one rectilinear motion degree of freedom realizes that shower nozzle 8 lifts simultaneously, avoids shower nozzle 8 and scraper 2 to crash.
The interior of the molding cabin 4 is provided with an electric heating device for heating and curing the molding platform 5, and the electric heating device preferably selects an electric heating wire, an electric heating plate and the like to realize curing of the adhesive.
Printing device still includes stock solution bucket 6, and stock solution bucket 6 is used for saving the adhesive, and the upper end fixedly connected with conveyer pipe 7 of stock solution bucket 6, and the inside of stock solution bucket 6 still is provided with the water pump to conveyer pipe 7 extends to the inside of stock solution bucket 6 and is connected with the output of water pump, and the other end and the injector head 8 of conveyer pipe 7 are connected, and the water pump work is pumped the adhesive from injector head 8 department.
The components of the middle component related to linear motion adopt linear driving components, such as a hydraulic telescopic cylinder, a pneumatic telescopic cylinder, a gear and rack transmission structure, a screw rod motion pair and the like, a plurality of linear motions are arranged, the linear driving components can be superposed in different directions, and the linear motion of multiple degrees of freedom of the components is realized.
The working principle is as follows: when the printing machine is used, a printing substrate is placed on the powder platform 3, an adhesive is stored in the liquid storage barrel 6, the powder platform 3 ascends and is 0.1mm high, the scraper 2 acts to hang the exposed printing substrate on the forming platform 5 to uniformly lay a layer, the scraper 2 resets, the spray head 8 acts to coat the adhesive on the laid printing substrate, the electric heating device is electrified to generate heat to cure the adhesive, the forming platform 5 descends after the spray head 8 finishes the work, the powder platform 3 ascends, and the scraper 2 works … … until the pole piece is successfully produced.
Meanwhile, the precision of the printing equipment is set, and the precision of pole piece printing can be improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A method of making a formed bipolar plate by 3DP, comprising the steps of:
s1: mixing graphite powder with a particle size of 200 meshes or less with carbon black, carbon nanotubes and a coupling agent to obtain a printing substrate for later use;
s2: uniformly paving a printing substrate, then coating a thermosetting adhesive on the surface of the paved printing substrate according to the size of a produced pole piece, and simultaneously heating to cure the adhesive;
s3: s2 is repeated until a complete pole piece is obtained.
2. A method of 3DP forming a bipolar plate as claimed in claim 1, wherein: the coupling agent adopts organic silicon or carbonic ester.
3. A method of 3DP forming a bipolar plate as claimed in claim 1, wherein: the adhesive comprises the following components in parts by weight: 1-10 parts of epoxy resin, 1-10 parts of phenolic resin and 1-10 parts of vinyl epoxy resin.
4. A method of 3DP forming a bipolar plate as claimed in claim 1, wherein: the temperature of heating in the S2 is 120-220 ℃.
5. The printing device provided by the method for preparing the formed bipolar plate by 3DP according to any one of claims 1 to 4, comprising a powder cabin (1) and a forming cabin (4) which are arranged side by side, wherein a liftable powder platform (3) is arranged inside the powder cabin (1), a liftable forming platform (5) is arranged inside the forming cabin (4), the upper ends of the powder cabin (1) and the forming cabin (4) are provided with a scraper (2) which moves linearly, and an injector head (8) with three linear motion degrees of freedom is arranged above the forming platform (5).
6. The printing apparatus of claim 5, wherein: printing device still includes stock solution bucket (6), the upper end fixedly connected with conveyer pipe (7) of stock solution bucket (6), the other end and the injector head (8) of conveyer pipe (7) are connected.
7. The printing apparatus of claim 5, wherein: an electric heating device is arranged in the forming cabin (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210017879.5A CN114536751A (en) | 2022-01-07 | 2022-01-07 | Method for preparing formed bipolar plate by 3DP |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210017879.5A CN114536751A (en) | 2022-01-07 | 2022-01-07 | Method for preparing formed bipolar plate by 3DP |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114536751A true CN114536751A (en) | 2022-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210017879.5A Pending CN114536751A (en) | 2022-01-07 | 2022-01-07 | Method for preparing formed bipolar plate by 3DP |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102844926A (en) * | 2010-04-16 | 2012-12-26 | 住友电气工业株式会社 | Bipolar plate for redox flow battery |
| CN104552938A (en) * | 2013-10-27 | 2015-04-29 | 西安中科麦特电子技术设备有限公司 | Quick 3D printing and molding device |
| WO2018015189A1 (en) * | 2016-07-18 | 2018-01-25 | Robert Bosch Gmbh | Method for producing a bipolar plate for a fuel cell, and fuel cell |
| CN108290795A (en) * | 2015-11-24 | 2018-07-17 | 西格里碳素欧洲公司 | Include the plastic components of carbon filler |
| CN112909282A (en) * | 2021-01-29 | 2021-06-04 | 江苏大学 | Fuel cell bipolar plate and manufacturing method thereof |
-
2022
- 2022-01-07 CN CN202210017879.5A patent/CN114536751A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102844926A (en) * | 2010-04-16 | 2012-12-26 | 住友电气工业株式会社 | Bipolar plate for redox flow battery |
| CN104552938A (en) * | 2013-10-27 | 2015-04-29 | 西安中科麦特电子技术设备有限公司 | Quick 3D printing and molding device |
| CN108290795A (en) * | 2015-11-24 | 2018-07-17 | 西格里碳素欧洲公司 | Include the plastic components of carbon filler |
| WO2018015189A1 (en) * | 2016-07-18 | 2018-01-25 | Robert Bosch Gmbh | Method for producing a bipolar plate for a fuel cell, and fuel cell |
| CN112909282A (en) * | 2021-01-29 | 2021-06-04 | 江苏大学 | Fuel cell bipolar plate and manufacturing method thereof |
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Application publication date: 20220527 |