CN103022531A - Method for preparing bipolar plate of vanadium cell - Google Patents
Method for preparing bipolar plate of vanadium cell Download PDFInfo
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- CN103022531A CN103022531A CN2012105525045A CN201210552504A CN103022531A CN 103022531 A CN103022531 A CN 103022531A CN 2012105525045 A CN2012105525045 A CN 2012105525045A CN 201210552504 A CN201210552504 A CN 201210552504A CN 103022531 A CN103022531 A CN 103022531A
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- vanadium cell
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention relates to the field of manufacturing of vanadium cells, in particular to a method for preparing a bipolar plate of a vanadium cell, and solves the problems that the degree of mixing uniformity of materials is difficult to ensure, the resistivity of a polymer-carbon black composite bipolar plate is very high, the surface resistance of the bipolar plate is increased due to electrochemical corrosion and the like in the prior art. In order to solve the problems, according to the working requirement of the vanadium cell, a carbon fiber electrode with high corrosion resistance is taken as a conductive material to prepare the bipolar plate of the vanadium cell which is high in electric conductivity and simple in manufacturing procedure. The bipolar plate comprises a resin plate and an electrode; and the resin plate and the electrode are thermally pressed and molded to facilitate resin to completely permeate to the electrode so as to prepare the bipolar plate of the vanadium cell. According to the method, the resin is injected to the electrode to serve as a framework material, so that the conductivity is approximate to that of a graphite felt, the electrochemical corrosion resistance is high in the using process, the resistance is not increased and the reliability of the vanadium cell is improved.
Description
Technical field
The present invention relates to vanadium cell and make the field, be specially the preparation method that a kind of vanadium cell is used bipolar plates.
Background technology
Vanadium cell, full name is all vanadium ion redox flow battery, is a kind of new green environment protection battery.Bipolar plates is one of critical component of all-vanadium flow battery, plays a part to connect both positive and negative polarity and the interior circuit of turn-on battery of different monocells, requires it to possess good conductivity, mechanical strength, chemically-resistant oxidation and electrochemical corrosion performance.Selectable material mainly comprises metal double polar plates, pure graphite bi-polar plate and polymer-carbon materials composite dual-electrode plates.Because there is problem metal material bipolar plates price and corrosion resistance aspect, seldom studied and use.Rupture easily when pure graphite bi-polar plate processing and installation, when large-scale industrial application, be restricted.But polymer-carbon materials composite dual-electrode plates adopts mill or the mixing resin of extruder and conductive filler all has the drawback that is difficult to mix, and conductivity is all on the low side.
Although bipolar plates research has obtained certain achievement, but still there is the problem that needs solution.The bipolar plates resistivity that adopts the conventional hybrid mode to prepare is higher than 0.5 Ω .cm, is difficult to satisfy cell process to the electric conductivity requirement.And in use because electrochemical corrosion causes the bipolar plate surfaces carbon black granules to peel off, resistance increases, and causes and alters liquid, may cause battery failure when serious.
Summary of the invention
In order to overcome the deficiencies in the prior art, the object of the invention is to propose the preparation method that a kind of vanadium cell is used bipolar plates, solve that the mixing uniformity coefficient of material is difficult to guarantee in the prior art, the too high and electrochemical corrosion of polymer-carbon black composite dual-electrode plates resistivity causes the problems such as bipolar plate surfaces resistance increase.
For achieving the above object, technical scheme of the present invention is:
A kind of vanadium cell preparation method of bipolar plates, this bipolar plates comprises resin plate and electrode, with resin plate and electrode by hot-forming mode, make resin be penetrated in the electrode fully, preparation vanadium cell bipolar plates, its resistivity can reach 0.03-0.1 Ω .cm, and surface carbon fiber electrochemical corrosion resistant, the phenomenon that sheet resistance increases can not occur, improve the reliability of vanadium cell.
The described vanadium cell preparation method of bipolar plates, resin plate is thermoplastic sheet or thermosetting plate.
Described vanadium cell adopts the material of one or more mixing in polyvinyl resin plate (PE), acrylic resin plate (PP), vinylchloride resin plate (PVC), polycaprolactam plate (PA6), the acrylonitrile-butadiene-styrene copolymer plate (ABS) to make with the preparation method of bipolar plates, resin plate.
Described vanadium cell adopts carbon felt or graphite felt with the preparation method of bipolar plates, electrode.
The described vanadium cell preparation method of bipolar plates, concrete steps are as follows:
1) electrode and macromolecule resin plate are put into mould, by hot press hot pressing, hot pressing temperature is 100～300 ℃, and hot pressing time is 5～200min, and hot pressing pressure is 0.1～25MPa;
2) after the taking-up mould is put into cold press, the temperature of colding pressing is 5～30 ℃, and the time of colding pressing is 5～200min, and the pressure of colding pressing is 0.1～25MPa;
3) taking-up is the vanadium cell bipolar plates.
Preferably, 170～250 ℃ of hot pressing temperatures, hot pressing time is 20～100min, hot pressing pressure is 1～15MPa.
Preferably, the temperature of colding pressing is 10～25 ℃, and the time of colding pressing is 20～100min, and the pressure of colding pressing is 1～15MPa.
The described vanadium cell preparation method of bipolar plates, the thickness of resin plate is 2～10mm.
The described vanadium cell preparation method of bipolar plates, the thickness of carbon felt or graphite felt is 2～10mm, the bulk density of carbon felt or graphite felt is 0.05～0.20g/cm
3
Advantage of the present invention:
1, in the prior art, the mixing lack of homogeneity of carbon black and resin, and in use because electrochemical corrosion causes the bipolar plate surfaces carbon black granules to peel off, resistance increases, and causes and alters liquid, causes battery failure.In order to address the above problem, the present invention is according to the vanadium cell job requirement, adopt the strong carbon fiber electrically of corrosion resistance very electric conducting material prepare conductance height, the simple vanadium cell bipolar plates of manufacturing procedure, with resin plate and electrode by hot-forming mode, resin is penetrated in the electrode fully, preparation vanadium cell bipolar plates.
2, vanadium cell of the present invention with the preparation method of bipolar plates be with resin by injection in the electrode as framework material, conductivity is close to graphite felt, and unusual electrochemical corrosion resistant in use, resistance can not increase, and has improved the reliability of vanadium cell.
3, vanadium cell bipolar plates of the present invention adopts the mode with resin plate and the direct hot pressing of electrode, and the mixing uniformity coefficient of material that has solved existing processing technology existence is poor, the too high problem of polymer-carbon black composite dual-electrode plates resistivity.
4, vanadium cell of the present invention bipolar plates preparation technology can prepare the large tracts of land bipolar plates, and processing technology is simple, greatly reduces cost.
Embodiment
Below by embodiment in detail the present invention is described in detail.
Embodiment 1
(bulk density is 0.15g/cm to the graphite felt that 3mm is thick
3) and the thick polyvinyl resin plate (PE) of 2mm put into mould, by hot press hot pressing, hot pressing temperature is 180 ℃, hot pressing time is 20min, hot pressing pressure is 2MPa; After the taking-up mould is put into cold press, the temperature of colding pressing is 5 ℃, and the time of colding pressing is 20min, and the pressure of colding pressing is 2MPa; Taking-up is the vanadium cell bipolar plates.
The specific insulation of the conductive bipolar plate of preparation is: 0.1 Ω .cm.As vanadium cell both positive and negative polarity collector plate, the battery charging and discharging performance parameter is: coulombic efficiency 94.1%, voltage efficiency 83.1%, energy efficiency 78.1%.
Embodiment 2
(bulk density is 0.15g/cm to the graphite felt that 5mm is thick
3) and the thick acrylic resin plate (PP) of 4mm put into mould, by hot press hot pressing, hot pressing temperature is 190 ℃, hot pressing time is 25min, hot pressing pressure is 3MPa; After the taking-up mould is put into cold press, the temperature of colding pressing is 15 ℃, and the time of colding pressing is 30min, and the pressure of colding pressing is 2MPa; Taking-up is the vanadium cell bipolar plates.
The specific insulation of the conductive bipolar plate of preparation is: 0.08 Ω .cm.As vanadium cell both positive and negative polarity collector plate, the battery charging and discharging performance parameter is: coulombic efficiency 93.2%, voltage efficiency 84.2%, energy efficiency 78.5%.
Embodiment 3
(bulk density is 0.20g/cm to the graphite felt that 6mm is thick
3) and the thick vinylchloride resin plate (PVC) of 6mm put into mould, by hot press hot pressing, hot pressing temperature is 120 ℃, hot pressing time is 35min, hot pressing pressure is 1MPa; After the taking-up mould is put into cold press, the temperature of colding pressing is 10 ℃, and the time of colding pressing is 60min, and the pressure of colding pressing is 1MPa; Taking-up is the vanadium cell bipolar plates.
The specific insulation of the conductive bipolar plate of preparation is: 0.07 Ω .cm.As vanadium cell both positive and negative polarity collector plate, the battery charging and discharging performance parameter is: coulombic efficiency 95.0%, voltage efficiency 84.3%, energy efficiency 80.1%.
Embodiment 4
(bulk density is 0.20g/cm to the graphite felt that 7mm is thick
3) and the thick polycaprolactam plate (PA6) of 6mm put into mould, by hot press hot pressing, hot pressing temperature is 250 ℃, hot pressing time is 45min, hot pressing pressure is 4MPa; After the taking-up mould is put into cold press, the temperature of colding pressing is 10 ℃, and the time of colding pressing is 50min, and the pressure of colding pressing is 4MPa; Taking-up is the vanadium cell bipolar plates.
The specific insulation of the conductive bipolar plate of preparation is: 0.09 Ω .cm.As vanadium cell both positive and negative polarity collector plate, the battery charging and discharging performance parameter is: coulombic efficiency 92.6%, voltage efficiency 83.8%, energy efficiency 77.6%.
Embodiment 5
(bulk density is 0.15g/cm to the graphite felt that 5mm is thick
3) and the thick acrylonitrile-butadiene-styrene copolymer plate (ABS) of 4mm put into mould, by hot press hot pressing, hot pressing temperature is 210 ℃, hot pressing time is 25min, hot pressing pressure is 2MPa; After the taking-up mould is put into cold press, the temperature of colding pressing is 20 ℃, and the time of colding pressing is 40min, and the pressure of colding pressing is 1MPa; Taking-up is the vanadium cell bipolar plates.
The specific insulation of the conductive bipolar plate of preparation is: 0.07.cm.As vanadium cell both positive and negative polarity collector plate, the battery charging and discharging performance parameter is: coulombic efficiency 92.6%, voltage efficiency 85.1%, energy efficiency 78.8%.
Embodiment 6
(bulk density is 0.10g/cm to the carbon felt that 5mm is thick
3) and the thick polyvinyl resin plate (PE) of 4mm put into mould, by hot press hot pressing, hot pressing temperature is 160 ℃, hot pressing time is 40min, hot pressing pressure is 1MPa; After the taking-up mould is put into cold press, the temperature of colding pressing is 10 ℃, and the time of colding pressing is 60min, and the pressure of colding pressing is 1MPa; Taking-up is the vanadium cell bipolar plates.
The specific insulation of the conductive bipolar plate of preparation is: 0.05 Ω .cm.As vanadium cell both positive and negative polarity collector plate, the battery charging and discharging performance parameter is: coulombic efficiency 92.4%, voltage efficiency 86.5%, energy efficiency 79.9%.
Embodiment 7
(bulk density is 0.20g/cm to the graphite felt that 3mm is thick
3) and the thick resin plate (resin plate that acrylic resin PP and polyvinyl resin PE are mixed) of 4mm put into mould, by hot press hot pressing, hot pressing temperature is 230 ℃, hot pressing time is 10min, hot pressing pressure is 5MPa; After the taking-up mould is put into cold press, the temperature of colding pressing is 20 ℃, and the time of colding pressing is 50min, and the pressure of colding pressing is 5MPa; Taking-up is the vanadium cell bipolar plates.
The specific insulation of the conductive bipolar plate of preparation is: 0.08 Ω .cm.As vanadium cell both positive and negative polarity collector plate, the battery charging and discharging performance parameter is: coulombic efficiency 93.5%, voltage efficiency 84.6%, energy efficiency 78.5%.
The result shows that the present invention can prepare vanadium cell can reach 0.03-0.1 Ω .cm with bipolar plates resistivity, and surface carbon fiber electrochemical corrosion resistant, the phenomenon that sheet resistance increases can not occur, and has improved the reliability of vanadium cell, satisfies vanadium cell and uses needs.
Claims (9)
1. a vanadium cell is with the preparation method of bipolar plates, and it is characterized in that: this bipolar plates comprises resin plate and electrode, by hot-forming mode, resin is penetrated in the electrode fully at resin plate and electrode, prepares the vanadium cell bipolar plates.
2. according to the preparation method of vanadium cell claimed in claim 1 with bipolar plates, it is characterized in that: resin plate is thermoplastic sheet or thermosetting plate.
3. according to the preparation method of vanadium cell claimed in claim 2 with bipolar plates, it is characterized in that: resin plate adopts the material of one or more mixing in polyvinyl resin plate, acrylic resin plate, vinylchloride resin plate, polycaprolactam plate, the acrylonitrile-butadiene-styrene copolymer plate to make.
4. according to the preparation method of vanadium cell claimed in claim 1 with bipolar plates, it is characterized in that: electrode adopts carbon felt or graphite felt.
5. according to the preparation method of vanadium cell claimed in claim 1 with bipolar plates, it is characterized in that concrete steps are as follows:
1) electrode and macromolecule resin plate are put into mould, by hot press hot pressing, hot pressing temperature is 100～300 ℃, and hot pressing time is 5～200min, and hot pressing pressure is 0.1～25MPa;
2) after the taking-up mould is put into cold press, the temperature of colding pressing is 5～30 ℃, and the time of colding pressing is 5～200min, and the pressure of colding pressing is 0.1～25MPa;
3) taking-up is the vanadium cell bipolar plates.
6. according to the preparation method of vanadium cell claimed in claim 5 with bipolar plates, it is characterized in that, in the step (1), preferably, and 170～250 ℃ of hot pressing temperatures, hot pressing time is 20～100min, hot pressing pressure is 1～15MPa.
7. according to the preparation method of vanadium cell claimed in claim 5 with bipolar plates, it is characterized in that in the step (2), preferably, the temperature of colding pressing is 10～25 ℃, the time of colding pressing is 20～100min, and the pressure of colding pressing is 1～15MPa.
8. use the preparation method of bipolar plates according to claim 1 or 5 described vanadium cells, it is characterized in that: the thickness of resin plate is 2～10mm.
9. use the preparation method of bipolar plates according to claim 1 or 5 described vanadium cells, it is characterized in that: the thickness of carbon felt or graphite felt is 2～10mm, and the bulk density of carbon felt or graphite felt is 0.05～0.20g/cm
3
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210552504.5A CN103022531B (en) | 2012-12-18 | 2012-12-18 | Method for preparing bipolar plate of vanadium cell |
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| CN201210552504.5A CN103022531B (en) | 2012-12-18 | 2012-12-18 | Method for preparing bipolar plate of vanadium cell |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409740A (en) * | 2014-11-28 | 2015-03-11 | 中国科学院金属研究所 | Novel bipolar plate for vanadium battery and preparation method of novel bipolar plate |
| CN105322197A (en) * | 2014-08-01 | 2016-02-10 | 大连融科储能技术发展有限公司 | High specific surface area bipolar plate for flow battery and preparation method thereof |
| CN106848346A (en) * | 2017-03-06 | 2017-06-13 | 周翔 | Flow battery bipolar plates and preparation method thereof |
| CN108598519A (en) * | 2018-05-18 | 2018-09-28 | 深圳市晶特智造科技有限公司 | A kind of bipolar plates and preparation method thereof |
| CN110176608A (en) * | 2019-04-29 | 2019-08-27 | 上海电气集团股份有限公司 | A kind of compound bipolar plates of thermosetting resin base used for all-vanadium redox flow battery and preparation method thereof |
| CN110620240A (en) * | 2018-06-19 | 2019-12-27 | 北京普能世纪科技有限公司 | Preparation method of integrated electrode and vanadium redox flow battery |
| CN117207561A (en) * | 2023-11-07 | 2023-12-12 | 寰泰储能科技股份有限公司 | Bipolar plate for all-vanadium redox flow battery and preparation method thereof |
| CN117691146A (en) * | 2024-01-29 | 2024-03-12 | 江苏美淼储能科技有限公司 | Preparation process of flow battery bipolar plate |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105322197A (en) * | 2014-08-01 | 2016-02-10 | 大连融科储能技术发展有限公司 | High specific surface area bipolar plate for flow battery and preparation method thereof |
| CN104409740A (en) * | 2014-11-28 | 2015-03-11 | 中国科学院金属研究所 | Novel bipolar plate for vanadium battery and preparation method of novel bipolar plate |
| CN104409740B (en) * | 2014-11-28 | 2016-08-03 | 中国科学院金属研究所 | A kind of Novel vanadium battery bipolar plates and preparation method thereof |
| CN106848346A (en) * | 2017-03-06 | 2017-06-13 | 周翔 | Flow battery bipolar plates and preparation method thereof |
| CN106848346B (en) * | 2017-03-06 | 2019-07-26 | 昆山知氢信息科技有限公司 | Flow battery bipolar plates and preparation method thereof |
| CN108598519A (en) * | 2018-05-18 | 2018-09-28 | 深圳市晶特智造科技有限公司 | A kind of bipolar plates and preparation method thereof |
| CN110620240A (en) * | 2018-06-19 | 2019-12-27 | 北京普能世纪科技有限公司 | Preparation method of integrated electrode and vanadium redox flow battery |
| CN110176608A (en) * | 2019-04-29 | 2019-08-27 | 上海电气集团股份有限公司 | A kind of compound bipolar plates of thermosetting resin base used for all-vanadium redox flow battery and preparation method thereof |
| CN117207561A (en) * | 2023-11-07 | 2023-12-12 | 寰泰储能科技股份有限公司 | Bipolar plate for all-vanadium redox flow battery and preparation method thereof |
| CN117207561B (en) * | 2023-11-07 | 2024-02-23 | 寰泰储能科技股份有限公司 | Bipolar plate for all-vanadium redox flow battery and preparation method thereof |
| CN117691146A (en) * | 2024-01-29 | 2024-03-12 | 江苏美淼储能科技有限公司 | Preparation process of flow battery bipolar plate |
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