CN104091957B - Preparation method for Proton Exchange Membrane Fuel Cells superconduction composite graphite bipolar plates - Google Patents
Preparation method for Proton Exchange Membrane Fuel Cells superconduction composite graphite bipolar plates Download PDFInfo
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- CN104091957B CN104091957B CN201410331958.9A CN201410331958A CN104091957B CN 104091957 B CN104091957 B CN 104091957B CN 201410331958 A CN201410331958 A CN 201410331958A CN 104091957 B CN104091957 B CN 104091957B
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- fuel cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8875—Methods for shaping the electrode into free-standing bodies, like sheets, films or grids, e.g. moulding, hot-pressing, casting without support, extrusion without support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M2008/1095—Fuel cells with polymeric electrolytes
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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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- Manufacturing & Machinery (AREA)
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- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Fuel Cell (AREA)
Abstract
Preparation method for Proton Exchange Membrane Fuel Cells superconduction composite graphite bipolar plates, comprise the following steps: the first step: according to mass fraction meter, 1.2 ~ 1.5 parts of superconductor fibres, 20 ~ 25 parts of expanded graphites are sequentially added in 200 ~ 220 parts of deionized waters and are uniformly dispersed, obtains suspension；Second step: high-molecular organic adhesive is dropped in step one gained suspension, when viscosity is 20000 ~ 21000CPS, it is extended down in grinding tool mold by gained mixture flow, when pressure reaches 150 ~ 180, the pressurize demoulding in 5 ~ 15 minutes and get final product, the present invention utilizes the direct pressing at normal temperatures of superconductor fibre, expanded graphite and high-molecular organic adhesive to form bipolar plates, and the method has good stability and has the repeatability of excellence；The conductivity of bipolar plate of high that the inventive method prepares is high, and hardness is high, pressure and acid corrosion-resistant.
Description
Technical field
The invention belongs to Proton Exchange Membrane Fuel Cells field, be specifically related to a kind of preparation method for Proton Exchange Membrane Fuel Cells superconduction composite graphite bipolar plates.
Background technology
Proton Exchange Membrane Fuel Cells is one of the most popular novel energy of current international research, and the electrical carbon carbon plate generally using price high due to its bipolar plates forms with engraving through polishing, causes the price of bipolar plates to occupy whole battery total price 60% ~ 80%.Exploitation low price, the novel graphite bipolar plates of superconduction are one of key points reducing this battery cost.
At present about Proton Exchange Membrane Fuel Cells composite graphite bipolar plates and study a lot of, but still suffer from following deficiency: the first, internal resistance is big, owing to having mixed conventional nonconducting high-molecular organic adhesive of 5 ~ 30%, causing electron transmission not smooth to varying degrees, the resistance causing double plate is the biggest；The second, producing heat high, proton fuel cell is low voltage high current electric discharge, owing to the internal resistance of bipolar plates is very big, will necessarily produce substantial amounts of heat and cause the MEA dehydration of proton fuel cell too much in discharge process；3rd anti-pressure ability is not enough, and bipolar plates prepared by general high-molecular organic adhesive in use quantity of heat production is high, and life-time service causes these macromolecule accelerated ageings, causes carbon plate easily to split, makes anti-pressure ability decline；
The present invention utilizes superconductor fibre, expanded graphite and high-molecular organic adhesive, and directly pressing forms bipolar plates and gained bipolar plates has the performances such as excellent pressure and hardness is high at normal temperatures, and currently available technology not yet finds to use relevant raw materials to prepare the with low cost and superconduction composite graphite bipolar plates for Proton Exchange Membrane Fuel Cells of excellent performance through the method.
Summary of the invention
Solve the technical problem that: the present invention overcomes the deficiencies in the prior art to propose a kind of preparation method for Proton Exchange Membrane Fuel Cells superconduction composite graphite bipolar plates, and this preparation method is simple and has good repeatability.
Technical scheme:
For the preparation method of Proton Exchange Membrane Fuel Cells superconduction composite graphite bipolar plates, comprise the following steps:
The first step: according to mass fraction meter, 1.2 ~ 1.5 parts of superconductor fibres, 20 ~ 25 parts of expanded graphites are sequentially added in 200 ~ 220 parts of deionized waters and are uniformly dispersed, obtains suspension；
Second step: high-molecular organic adhesive dropped in step one gained suspension, when viscosity is 20000 ~ 21000CPS, is extended down in grinding tool mold by gained mixture flow, when pressure reaches 150 ~ 180, and the pressurize demoulding in 5 ~ 15 minutes and get final product.
Superconductor fibre described in step one is PAN base carbon fibre or repolymerization becomes fiber.
Described repolymerization becomes fiber to be the one in polyacrylonitrile-based carbon fibre, viscose-based carbon fiber or asphalt base carbon fiber.
Described high-molecular organic adhesive is polypyrrole or polythiophene.
High-molecular organic adhesive is dropped in step one gained suspension by described step 2 with the speed of 1 ~ 1.2ml/min.
Beneficial effect
First, the present invention utilizes the direct pressing at normal temperatures of superconductor fibre, expanded graphite and high-molecular organic adhesive to form bipolar plates, and the method has good stability and has the repeatability of excellence；
Second, on the one hand preparation method of the present invention is avoided using high electrical carbon graphite cake, greatly reduces raw material cost, eliminates the need for large-scale graphite polisher and engraving machine, and seals no dust pollution in production process, to human body and environmental friendliness；On the other hand, directly it is solidify to form bipolar plates by normal temperature high voltage and eliminate machining complex steps, be effectively improved the precision of technique and repeatability and reduce production cost；
3rd, the conductivity of bipolar plate of high that the inventive method prepares is high, and hardness is high, pressure and acid corrosion-resistant.
Detailed description of the invention
Superconductor fibre used in the present invention is PAN base carbon fibre, polyacrylonitrile-based carbon fibre, the superconductor fibre of the type such as viscose-based carbon fiber and asphalt base carbon fiber.Superconductor fibre has the advantages such as conductivity, high tensile ability and structural capacity are strong；Expanded graphite used by the present invention is bought from Qingdao Xing Yuan company, its carbon content >=99.95%.
Below in conjunction with embodiment, the present invention is described in further details.
Embodiment 1
Preparation method for Proton Exchange Membrane Fuel Cells superconduction composite graphite bipolar plates, it is characterised in that comprise the following steps:
The first step: according to mass fraction meter, 1.2 parts of PAN base carbon fibres, 20 parts of expanded graphites are sequentially added in 200 parts of deionized waters and are uniformly dispersed, obtains suspension；
Second step: drop in step one gained suspension with the speed of 1ml/min by polypyrrole, when viscosity is 20000 ~ 21000CPS, is extended down in grinding tool mold by gained mixture flow, when pressure reaches 150MPa, and the pressurize 15min demoulding and get final product.
Embodiment 2
Preparation method for Proton Exchange Membrane Fuel Cells superconduction composite graphite bipolar plates, it is characterised in that comprise the following steps:
1.5 parts of polyacrylonitrile-based carbon fibres, 25 parts of expanded graphites are sequentially added in 220 parts of deionized waters and are uniformly dispersed, obtain suspension by the first step: according to mass fraction meter successively；
Second step: drop in step one gained suspension with the speed of 1.2ml/min by polythiophene, when viscosity is 20000 ~ 21000CPS, is extended down in grinding tool mold by gained mixture flow, when pressure reaches 180MPa, and the pressurize 5min demoulding and get final product.
Embodiment 3
Preparation method for Proton Exchange Membrane Fuel Cells superconduction composite graphite bipolar plates, it is characterised in that comprise the following steps:
1.3 parts of viscose-based carbon fibers, 22 parts of expanded graphites are sequentially added in 210 parts of deionized waters and are uniformly dispersed, obtain suspension by the first step: according to mass fraction meter successively；
Second step: drop in step one gained suspension with the speed of 1.1ml/min by polythiophene, when viscosity is 20000 ~ 21000CPS, is extended down in grinding tool mold by gained mixture flow, when pressure reaches 160MPa, and the pressurize 10min demoulding and get final product.
Embodiment 4
Preparation method for Proton Exchange Membrane Fuel Cells superconduction composite graphite bipolar plates, it is characterised in that comprise the following steps:
1.4 parts of asphalt base carbon fibers, 23 parts of expanded graphites are sequentially added in 215 parts of deionized waters and are uniformly dispersed, obtain suspension by the first step: according to mass fraction meter successively；
Second step: drop in step one gained suspension with the speed of 1.2ml/min by polypyrrole, when viscosity is 20000 ~ 21000CPS, is extended down in grinding tool mold by gained mixture flow, when pressure reaches 160MPa, and the pressurize 12min demoulding and get final product.
Embodiment 5
Preparation method for Proton Exchange Membrane Fuel Cells superconduction composite graphite bipolar plates, it is characterised in that comprise the following steps:
1.3 parts of polyacrylonitrile-based carbon fibres, 22 parts of expanded graphites are sequentially added in 210 parts of deionized waters and are uniformly dispersed, obtain suspension by the first step: according to mass fraction meter successively；
Second step: drop in step one gained suspension with the speed of 1.1ml/min by polythiophene, when viscosity is 20000 ~ 21000CPS, is extended down in grinding tool mold by gained mixture flow, when pressure reaches 180MPa, and the pressurize 10min demoulding and get final product.
Bipolar plates embodiment 1 ~ 5 prepared and the most existing bipolar plates carry out Performance comparision, and test result see table 1:
The performance test results of table 1 bipolar plates
Note: "None" represents that this laboratory does not obtains data in this respect
As seen from the above table, gained bipolar plates of the present invention, compared with existing bipolar plates, all has clear improvement at aspects such as resistivity, rupture strength, Rockwell hardness and shore hardnesses, and every block cost substantially reduces, and wherein, embodiment 5 is most preferred embodiment.
Claims (3)
1. for the preparation method of Proton Exchange Membrane Fuel Cells superconduction composite graphite bipolar plates, it is characterised in that comprise the following steps:
The first step: according to mass fraction meter, 1.2～1.5 parts of superconductor fibres, 20～25 parts of expanded graphites are sequentially added in 200～220 parts of deionized waters and are uniformly dispersed, obtains suspension；
Second step: high-molecular organic adhesive dropped in step one gained suspension, when viscosity is 20000～21000CPS, is extended down in mould mold by gained mixture flow, when pressure reaches 150～180MPa, and the pressurize 5～15min demoulding and get final product.
Preparation method for Proton Exchange Membrane Fuel Cells superconduction composite graphite bipolar plates the most according to claim 1, it is characterised in that described high-molecular organic adhesive is polypyrrole or polythiophene.
Preparation method for Proton Exchange Membrane Fuel Cells superconduction composite graphite bipolar plates the most according to claim 2, it is characterised in that high-molecular organic adhesive is dropped in step one gained suspension by described step 2 with the speed of 1～1.2mL/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410331958.9A CN104091957B (en) | 2014-07-11 | 2014-07-11 | Preparation method for Proton Exchange Membrane Fuel Cells superconduction composite graphite bipolar plates |
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| CN201410331958.9A CN104091957B (en) | 2014-07-11 | 2014-07-11 | Preparation method for Proton Exchange Membrane Fuel Cells superconduction composite graphite bipolar plates |
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| CN104091957A CN104091957A (en) | 2014-10-08 |
| CN104091957B true CN104091957B (en) | 2016-08-03 |
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| CN107302094B (en) * | 2017-06-15 | 2019-10-11 | 常州翊迈新材料科技有限公司 | Fuel battery metal double polar plate superconducts super anti-corrosion functional coating and preparation method |
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| CN1409426A (en) * | 2001-09-26 | 2003-04-09 | 大日本油墨化学工业株式会社 | Bipolar plate for fuel battery, its producing method and fuel battery |
| CN1236513C (en) * | 2003-05-22 | 2006-01-11 | 上海交通大学 | High-per formance carbon material preparing method by water-base curtain coating technology |
| CN103746122A (en) * | 2013-12-20 | 2014-04-23 | 苏州市万泰真空炉研究所有限公司 | Preparation method of composite material bipolar plates of novel fuel cells |
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Effective date of registration: 20161226 Address after: Leng Yu Lu Dantu high tech Industrial Park in Jiangsu Province, Zhenjiang City, No. 88, 212143 Patentee after: JS Power Inc. Address before: Leng Yu Lu Dantu high tech Industrial Park in Jiangsu Province, Zhenjiang City, No. 88, 212143 Patentee before: Jiangsu Chaojie Green Energy Technology Co., Ltd. |
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Effective date of registration: 20210526 Address after: 100071 A32, 301, 3rd floor, building 24, Qiyi Bainian, Fengtai District, Beijing Patentee after: China hydrogen (Beijing) new energy Co.,Ltd. Address before: No.88 lengli Road, Dantu high tech Industrial Park, Zhenjiang City, Jiangsu Province, 212143 Patentee before: Jiangsu Zhongjing New Energy Technology Co.,Ltd. |
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Effective date of registration: 20210819 Address after: 212143 No. 88 Leng Lu, Dantu District, Zhenjiang City, Jiangsu Province Patentee after: Sinohydro new energy (Jiangsu) Co.,Ltd. Address before: 100071 A32, 301, 3rd floor, building 24, Qiyi Bainian, Fengtai District, Beijing Patentee before: China hydrogen (Beijing) new energy Co.,Ltd. |