CN102569824A - Bipolar plate of integrated composite electrode, and manufacturing method and application thereof - Google Patents
Bipolar plate of integrated composite electrode, and manufacturing method and application thereof Download PDFInfo
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- CN102569824A CN102569824A CN2011104599422A CN201110459942A CN102569824A CN 102569824 A CN102569824 A CN 102569824A CN 2011104599422 A CN2011104599422 A CN 2011104599422A CN 201110459942 A CN201110459942 A CN 201110459942A CN 102569824 A CN102569824 A CN 102569824A
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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
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Abstract
The invention discloses a bipolar plate of an integrated composite electrode, and a manufacturing method and application thereof. The bipolar plate of the integrated composite electrode consists of integrated graphite felts/carbon felts and a plastic sheet, wherein the plastic sheet is embedded between two graphite felts/carbon felts; and the long axis and the width axis of the plastic film are greater than those of the graphite felts/carbon felts. The bipolar plate of the integrated composite electrode can significantly reduce the resistance generated by tightly pressing the existing graphite felts/carbon felts and the bipolar plate; the bipolar plate of the integrated composite electrode takes the graphite felts/carbon felts conductive matrixes, so that the conductivity is significantly improved and the phenomenon that a conductive strand breaks is rarely caused; the bipolar plate of the integrated composite electrode is good in mechanical properties, easy to machine, bendable and difficult to deform and good in airtight performance; the phenomenon of fluid mixing of the battery can be avoided; the bipolar plate of the integrated composite electrode manufactured by the manufacturing method can increase the discharge medium pressure, the energy efficiency and the service life of a whole-vanadium oxide flow energy storage battery; and the structural damage of the graphite felts or carbon felts and the carbonation and decomposition of the plastic can be avoided.
Description
Technical field
The invention belongs to the oxidation deoxidization liquid energy-storing battery technical field, be specifically related to integrated combination electrode bipolar plates that a kind of oxidation deoxidization liquid energy-storing battery uses and preparation method thereof and application.
Background technology
Electric energy is the modern society human lives, producing must obligato secondary energy sources, and along with socio-economic development and the people's living standard improves constantly, people are to electricity needs also increase day by day.Because electricity needs round the clock, differ greatly season, but the construction in power plant must be complementary with the peak electricity consumption, and it is lower to invest big utilance, and the environment and the ecological balance of periphery had bigger influence.Because of a little, constantly all kinds of power stations of development and electrical power trans mission/distribution system are to satisfy life and to produce the demand to electric power, and for making full use of all kinds of electricity generation systems and realizing stable power-supplying, the extensive efficient electric power storage technology of exploitation is very important.The application of extensive efficient flow accumulating system at first is and the supporting use of renewable energy systems such as wind energy, solar energy to make its stable power-supplying; Next is the peak load regulation network of thermal power generation and nuclear power, is particularly suitable for the direct current large electricity consumer and stores " paddy "; The emergency power supply that also can be used as the unusual time such as natural calamity, war, the stand-by station in important military base.
Oxidation deoxidization liquid energy-storing battery is compared with other chemical energy-storage batteries and is had lot of advantages, specifically has: the battery high life, and power and capacity can be by demand independent assortments and separate, and deep discharge can not damage battery.Oxidation deoxidization liquid energy-storing battery is a kind of novel electronation energy-storage battery; With the difference Jie's attitude metal ion in the electrolyte as anode and negative electrode active material; The electrolyte separate storage of positive pole and negative pole; Through electric pump with anodal electrolyte and negative pole cell liquor pump go into accomplish redox reaction in the battery graphite felt after, flow back in the reservoir vessel.From the operation principle of oxidation deoxidization liquid energy-storing battery, oxidation deoxidization liquid energy-storing battery possesses the advantage of extensive efficient electric power storage.
Operation principle according to oxidation deoxidization liquid energy-storing battery; Bipolar plates and graphite felt are the very important critical materials of oxidation deoxidization liquid energy-storing battery; The effect of bipolar plates is to completely cut off both positive and negative polarity electrolyte conduction current simultaneously, and graphite felt or carbon felt are in the vanadium redox energy-storage battery, to have better electrochemical activation and invertibity.Because electrolyte is strong acid and strong oxidizing property solution, therefore, bipolar plates and graphite felt will have fabulous conductivity and corrosion resistance, and the conductivity that bipolar plates should existing graphite cake also has the soft flexible of plastics; And very corrosion-resistant, in charge and discharge process, can not produce any electrochemical corrosion with electrolyte, can not produce the problem of any string liquid, leakage.The bipolar plates that present vanadium redox battery is used mainly contains: graphite bi-polar plate, conductive plastic bi-polar plate and integrated combination electrode bipolar plates.
The connected mode of graphite bi-polar plate and graphite felt is by the mode that is pressed together, and also is easy to separate even if can be bonded as one, and graphite bi-polar plate and graphite felt are under the same pressure of electric pump; Will form contact slot and having a resistance; Battery is after charge and discharge cycles after a while, and the phenomenon that is corroded appears in the graphite cake positive pole, spreads polyaniline in the graphite cake surfaces coated; Can prevent that being corroded from appearring in graphite cake; But as a whole because polyaniline and graphite cake can not fuse, after charge and discharge cycles after a while, polyaniline coating can be held, peel off with the graphite cake surface isolation; Resistance is increasing between graphite bi-polar plate and the graphite felt, and machinery can appear in graphite cake disintegrates and cause battery failure; In addition, graphite cake processing is extremely complicated to be difficult to do big size, and working (machining) efficiency very low price is extremely expensive again.
The connected mode of conductive plastic bi-polar plate and graphite felt is the mode by being pressed together; Also be easy to separate even if can be bonded as one, the main conductive filler of conductive plastic bi-polar plate is conductive acetylene carbon black, conductive carbon fibres peacekeeping graphite, after conductive acetylene carbon black, conductive carbon fibres peacekeeping graphite join in the thermoplastic polymer; Each conduction one's share of expenses for a joint undertaking between conductive acetylene carbon black, the conductive carbon fibres peacekeeping graphite is to be bonded together by thermoplastic polymer; And thermoplastic polymer is nonconducting material, and therefore, battery is after charge and discharge cycles after a while; Phenomenon of rupture can appear between conductive acetylene carbon black, the conductive carbon fibres peacekeeping graphite; Resistance is increasing between graphite bi-polar plate and the graphite felt, and bubbling can appear in conductive plastic bi-polar plate, by the galvano-cautery phenomenon, and causes battery failure.
One Chinese patent application 200810304837 discloses a kind of combination electrode for all vanadium redox flow battery; Being mainly combination electrode is to be joined by three kinds of conductive fillers (conductive acetylene carbon black, conductive carbon fibres peacekeeping graphite) to prepare the thermoplastic conductive plate in the thermoplastic polymer; The thermoplastic conductive plate is composited with graphite felt hot pressing again; Partially conductive carbon fiber in the graphite felt embeds conductive plate surface, forms the conductive network of IPN, thereby has improved the whole electric conductivity of product.Above-mentioned this combination electrode for all vanadium redox flow battery major defect is: after conductive acetylene carbon black, conductive carbon fibres peacekeeping graphite join in the thermoplastic polymer; Each conduction one's share of expenses for a joint undertaking between conductive acetylene carbon black, the conductive carbon fibres peacekeeping graphite is to be bonded together by thermoplastic polymer; And thermoplastic polymer is nonconducting material; In addition, because the thermoplastic polymer content in the middle of the thermoplastic conductive plate is less, just binding is less; The also insecure instability of the combined electrode structure that thermoplastic conductive plate and graphite felt hot pressing are composited; Battery phenomenon of rupture can occur between conductive acetylene carbon black, the conductive carbon fibres peacekeeping graphite after charge and discharge cycles after a while, conductive plastic bi-polar plate can occur by the galvano-cautery phenomenon; Resistance is increasing between conductive plastic bi-polar plate and the graphite felt, and conductive plastic bi-polar plate can occur being caused battery failure by galvano-cautery.
Summary of the invention
For fear of the contact resistance between graphite felt or carbon felt and the bipolar plates, and overcome that fracture appears in the non-metal kind electrode in the battery use and the defective that has a resistance and increase, primary and foremost purpose of the present invention is to provide a kind of integrated combination electrode bipolar plates.
Another object of the present invention is to provide the preparation method of above-mentioned integrated combination electrode bipolar plates.
A purpose more of the present invention is to provide the purposes of above-mentioned integrated combination electrode bipolar plates.
The object of the invention is realized through following technical proposals:
A kind of integrated combination electrode bipolar plates is made up of incorporate graphite felt/carbon felt and plastic sheet, and plastic sheet is embedded in the middle of two graphite felt/carbon felt, and the major axis of plastic sheet and wide axle are all greater than the major axis of graphite felt/carbon felt and wide.
The preparation method of above-mentioned integrated combination electrode bipolar plates; Be through adding the plastic sheet that hot extrusion forms softening shape with plastic pellet; Again plastic sheet is placed between two graphite felt/carbon felt, closes tight mould, add hot extrusion; Plastic sheet dissolves in graphite felt/carbon felt, makes integrated combination electrode bipolar plates after the cooling.
Above-mentioned preparation method specifically may further comprise the steps:
(1) to carrying out electrochemistry resistance utmost point oxidation processes or acid treatment behind graphite felt/carbon felt cleaning, drying; Plastic pellet is formed the plastic sheet that softens shape through adding hot extrusion;
(2) the mould A that two graphite felt/carbon felt is placed on respectively, B plate inboard are placed on plastic sheet between two graphite felt/carbon felt, close tight mould then;
(3) mould inside is vacuumized;
(4) graphite felt in mould and the mould/carbon felt and plastic sheet were handled 6-100 minute at 160-260 ℃ of following constant temperature; During this time also through the extruder extrusion die; Handle the back plastic sheet and all dissolve in graphite felt/carbon felt, make integrated combination electrode bipolar plates after the cooling.
The preferred PE of described plastic pellet (polyethylene) plastic pellet.
Above-mentioned integrated combination electrode bipolar plates can be applicable in the oxidation deoxidization liquid energy-storing battery.
The present invention has following advantage and effect with respect to prior art:
1, integrated combination electrode bipolar plates of the present invention can obviously reduce existing graphite felt/carbon felt and bipolar plates by compressing the resistance that the way of contact produces.
2, integrated combination electrode bipolar plates of the present invention is that to lean on graphite felt/carbon felt be conducting base, and electric conductivity significantly improves, and rarer conductive chain phenomenon of rupture takes place; Satisfactory mechanical property; Machine work is easy, and is flexible not yielding, and air-tightness well can not produce battery strings liquid phenomenon.
3, the integrated combination electrode bipolar plates that adopts the inventive method to be prepared into can improve the useful life of pressure, energy efficiency and battery in the discharge of full vanadium oxidation liquid flow energy storage battery, can not cause the structural failure and the plastics carbonization decomposition of graphite felt or carbon felt.
4, integrated combination electrode bipolar plates preparation technology of the present invention is simple, and electric conductivity one is put, and produces easily, and not yielding, product qualified rate is high, and product qualified rate can reach more than 98%, has good practicality and application prospect.
Description of drawings
Fig. 1 is the structural representation of a kind of integrated combination electrode bipolar plates of the present invention; Wherein, 1-plastic sheet, 2-graphite felt/carbon felt, 3-mould A plate, 4-mould B plate.
Embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is described in further detail, but execution mode of the present invention is not limited thereto.
Embodiment 1
A kind of integrated combination electrode bipolar plates is prepared by following method:
(1) the PE plastic pellet is formed the plastic sheet that softens shape through adding hot extrusion;
(2) the mould A that two thick graphite felt of 5mm is placed on respectively, B plate inboard are placed on the PE plastic sheet between two graphite felt, close tight mould then;
(3) mould inside is vacuumized;
(4) graphite felt in mould and the mould and PE plastic sheet were handled 75-100 minute at 160-170 ℃ of following constant temperature, during and through the extruder extrusion die, handle back PE plastic sheet and all dissolve in the graphite felt, make integrated combination electrode bipolar plates after the cooling.
The structure of prepared integrated combination electrode bipolar plates is as shown in Figure 1, and graphite felt 2 is integral with PE plastic sheet 1 extrusion molten, and plastic sheet 1 is embedded in the middle of two graphite felt 2, and the major axis of plastic sheet 1 and wide axle are all greater than the major axis of graphite felt 2 and wide.
Embodiment 2
A kind of integrated combination electrode bipolar plates is prepared by following method:
(1) the PE plastic pellet is formed the plastic sheet that softens shape through adding hot extrusion;
(2) the mould A that two thick carbon felts of 6mm is placed on respectively, B plate inboard are placed on the PE plastic sheet between two carbon felts, close tight mould then;
(3) mould inside is vacuumized;
(4) the carbon felt in mould and the mould and PE plastic sheet were handled 55-70 minute at 180-190 ℃ of following constant temperature, during and through the extruder extrusion die, handle back PE plastic sheet and all dissolve in the carbon felt, make integrated combination electrode bipolar plates after the cooling.
The structure of prepared integrated combination electrode bipolar plates is as shown in Figure 1, and carbon felt 2 is integral with PE plastic sheet 1 extrusion molten, and plastic sheet 1 is embedded in the middle of two carbon felts 2, and the major axis of plastic sheet 1 and wide axle are all greater than the major axis of graphite felt 2 and wide.
Embodiment 3
A kind of integrated combination electrode bipolar plates is prepared by following method:
(1) the PE plastic pellet is formed the plastic sheet that softens shape through adding hot extrusion;
(2) the mould A that two thick graphite felt of 7mm is placed on respectively, B plate inboard are placed on the PE plastic sheet between two graphite felt, close tight mould then;
(3) mould inside is vacuumized;
(4) graphite felt in mould and the mould and PE plastic sheet were handled 40-50 minute at 200-210 ℃ of following constant temperature, during and through the extruder extrusion die, handle back PE plastic sheet and all dissolve in the graphite felt, make integrated combination electrode bipolar plates after the cooling.
The structure of prepared integrated combination electrode bipolar plates is as shown in Figure 1, and graphite felt 2 is integral with PE plastic sheet 1 extrusion molten, and plastic sheet 1 is embedded in the middle of two graphite felt 2, and the major axis of plastic sheet 1 and wide axle are all greater than the major axis of graphite felt 2 and wide.
Embodiment 4
A kind of integrated combination electrode bipolar plates is prepared by following method:
(1) the PE plastic pellet is formed the plastic sheet that softens shape through adding hot extrusion;
(2) the mould A that two thick carbon felts of 8mm is placed on respectively, B plate inboard are placed on the PE plastic sheet between two carbon felts, close tight mould then;
(3) mould inside is vacuumized;
(4) the carbon felt in mould and the mould and PE plastic sheet were handled 25-35 minute at 220-240 ℃ of following constant temperature, during and through the extruder extrusion die, handle back PE plastic sheet and all dissolve in the carbon felt, make integrated combination electrode bipolar plates after the cooling.
The structure of prepared integrated combination electrode bipolar plates is as shown in Figure 1, and carbon felt 2 is integral with PE plastic sheet 1 extrusion molten, and plastic sheet 1 is embedded in the middle of two carbon felts 2, and the major axis of plastic sheet 1 and wide axle are all greater than the major axis of graphite felt 2 and wide.
Embodiment 5
A kind of integrated combination electrode bipolar plates is prepared by following method:
(1) the PE plastic pellet is formed the plastic sheet that softens shape through adding hot extrusion;
(2) the mould A that two thick graphite felt of 10mm is placed on respectively, B plate inboard are placed on the PE plastic sheet between two graphite felt, close tight mould then;
(3) mould inside is vacuumized;
(4) graphite felt in mould and the mould and PE plastic sheet were handled 6-20 minute at 250-260 ℃ of following constant temperature, during and through the extruder extrusion die, handle back PE plastic sheet and all dissolve in the graphite felt, make integrated combination electrode bipolar plates after the cooling.
The structure of prepared integrated combination electrode bipolar plates is as shown in Figure 1, and graphite felt 2 is integral with PE plastic sheet 1 extrusion molten, and plastic sheet 1 is embedded in the middle of two graphite felt 2, and the major axis of plastic sheet 1 and wide axle are all greater than the major axis of graphite felt 2 and wide.
The battery of the integrated combination electrode bipolar plates assembling that makes with embodiment 3, its charge-discharge performance is as shown in table 1.With the battery of conductive plastic bi-polar plate assembling, its charge-discharge performance is as shown in table 2.
The battery of the integrated combination electrode bipolar plates assembling of table 1 is at current density 50mA/cm
2Under charge-discharge performance
The battery of table 2 conductive plastic bi-polar plate assembling is at current density 50mA/cm
2Under charge-discharge performance
Can find out from table 1 and table 2; Adopt the battery of integrated combination electrode bipolar plates assembling of the present invention all to be significantly improved than pressure, current efficiency, voltage efficiency, energy efficiency, electrolyte utilance in the discharge of the battery of conductive plastic bi-polar plate assembling; More importantly be: the battery with integrated combination electrode bipolar plates assembling can use highly stablely, and battery is significantly promoted useful life; And the battery of conductive plastic bi-polar plate assembling is after charge and discharge cycles after a while, and battery performance significantly reduces, and explains that through contrast test the performance of the each side of integrated combination electrode bipolar plates all is superior to conductive plastic bi-polar plate.
The foregoing description is a preferred implementation of the present invention; But execution mode of the present invention is not restricted to the described embodiments; Other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; All should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (5)
1. integrated combination electrode bipolar plates, it is characterized in that: be made up of incorporate graphite felt/carbon felt and plastic sheet, plastic sheet is embedded in the middle of two graphite felt/carbon felt, and the major axis of plastic sheet and wide axle are all greater than the major axis of graphite felt/carbon felt and wide.
2. the preparation method of the said integrated combination electrode bipolar plates of claim 1 is characterized in that may further comprise the steps;
Plastic pellet through adding the plastic sheet that hot extrusion forms softening shape, is placed on plastic sheet between two graphite felt/carbon felt again, closes tight mould, add hot extrusion, plastic sheet dissolves in graphite felt/carbon felt, makes integrated combination electrode bipolar plates after the cooling.
3. according to the preparation method of the said integrated combination electrode bipolar plates of claim 2, it is characterized in that specifically may further comprise the steps:
(1) plastic pellet is formed the plastic sheet that softens shape through adding hot extrusion;
(2) the mould A that two graphite felt/carbon felt is placed on respectively, B plate inboard are placed on plastic sheet between two graphite felt/carbon felt, close tight mould then;
(3) mould inside is vacuumized;
(4) graphite felt in mould and the mould/carbon felt and plastic sheet were handled 6-100 minute at 160-260 ℃ of following constant temperature; During this time also through the extruder extrusion die; Handle the back plastic sheet and all dissolve in graphite felt/carbon felt, make integrated combination electrode bipolar plates after the cooling.
4. according to the preparation method of claim 2 or 3 described integrated combination electrode bipolar plates, it is characterized in that: described plastic pellet is the vinyon grain.
5. the application of the described integrated combination electrode bipolar plates of claim 1 in oxidation deoxidization liquid energy-storing battery.
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| CN102891324A (en) * | 2012-09-25 | 2013-01-23 | 中国科学院金属研究所 | Bipolar plate for vanadium battery and preparation method for bipolar plate |
| CN103022531A (en) * | 2012-12-18 | 2013-04-03 | 中国科学院金属研究所 | Method for preparing bipolar plate of vanadium cell |
| CN103268945A (en) * | 2013-07-02 | 2013-08-28 | 成都赢创科技有限公司 | Bipolar electrode for flow battery and manufacturing process thereof |
| CN104716295A (en) * | 2013-12-15 | 2015-06-17 | 中国科学院大连化学物理研究所 | Zinc/air battery zinc paste anode preparation device and zinc paste anode preparation method |
| CN107634238A (en) * | 2017-08-29 | 2018-01-26 | 国网电力科学研究院武汉南瑞有限责任公司 | A kind of bipolar plates and its manufacture method with higher-strength |
| CN108565473A (en) * | 2018-03-08 | 2018-09-21 | 广州市泓能五金有限公司 | Vanadium cell combination electrode and the preparation method and application thereof |
| CN108666595A (en) * | 2018-05-18 | 2018-10-16 | 深圳市晶特智造科技有限公司 | A kind of graphite bi-polar plate surface texture optimization method |
| CN108666594A (en) * | 2018-04-03 | 2018-10-16 | 华东师范大学 | A kind of bipolar plates manufacture craft |
| CN109496373A (en) * | 2018-03-16 | 2019-03-19 | 清华大学 | A kind of fuel cell composite dual-electrode plates and its binary channels three-dimensional flow field |
| WO2019124596A1 (en) * | 2017-12-22 | 2019-06-27 | 스탠다드에너지(주) | Composite electrode for redox flow battery and manufacturing method therefor |
| CN110875483A (en) * | 2018-09-04 | 2020-03-10 | 大连融科储能装备有限公司 | Integrated electrode-bipolar plate structure and preparation method |
| CN112467162A (en) * | 2019-09-06 | 2021-03-09 | 杭州中科氢能科技有限公司 | Bipolar plate, bipolar plate processing device and bipolar plate preparation method |
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| 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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| CN102891324A (en) * | 2012-09-25 | 2013-01-23 | 中国科学院金属研究所 | Bipolar plate for vanadium battery and preparation method for bipolar plate |
| CN102891324B (en) * | 2012-09-25 | 2014-12-24 | 中国科学院金属研究所 | Bipolar plate for vanadium battery and preparation method for bipolar plate |
| CN103022531A (en) * | 2012-12-18 | 2013-04-03 | 中国科学院金属研究所 | Method for preparing bipolar plate of vanadium cell |
| CN103268945A (en) * | 2013-07-02 | 2013-08-28 | 成都赢创科技有限公司 | Bipolar electrode for flow battery and manufacturing process thereof |
| CN104716295A (en) * | 2013-12-15 | 2015-06-17 | 中国科学院大连化学物理研究所 | Zinc/air battery zinc paste anode preparation device and zinc paste anode preparation method |
| CN104716295B (en) * | 2013-12-15 | 2017-01-11 | 中国科学院大连化学物理研究所 | Zinc/air battery zinc paste anode preparation device and zinc paste anode preparation method |
| CN107634238A (en) * | 2017-08-29 | 2018-01-26 | 国网电力科学研究院武汉南瑞有限责任公司 | A kind of bipolar plates and its manufacture method with higher-strength |
| CN107634238B (en) * | 2017-08-29 | 2024-03-15 | 国网电力科学研究院武汉南瑞有限责任公司 | Bipolar plate with higher strength and manufacturing method thereof |
| WO2019124596A1 (en) * | 2017-12-22 | 2019-06-27 | 스탠다드에너지(주) | Composite electrode for redox flow battery and manufacturing method therefor |
| CN108565473A (en) * | 2018-03-08 | 2018-09-21 | 广州市泓能五金有限公司 | Vanadium cell combination electrode and the preparation method and application thereof |
| CN109496373B (en) * | 2018-03-16 | 2022-05-20 | 清华大学 | Composite bipolar plate for fuel cell and dual-channel three-dimensional flow field thereof |
| CN109496373A (en) * | 2018-03-16 | 2019-03-19 | 清华大学 | A kind of fuel cell composite dual-electrode plates and its binary channels three-dimensional flow field |
| CN108666594A (en) * | 2018-04-03 | 2018-10-16 | 华东师范大学 | A kind of bipolar plates manufacture craft |
| CN108666595A (en) * | 2018-05-18 | 2018-10-16 | 深圳市晶特智造科技有限公司 | A kind of graphite bi-polar plate surface texture optimization method |
| CN110875483B (en) * | 2018-09-04 | 2020-12-18 | 大连融科储能装备有限公司 | Integrated electrode-bipolar plate structure and preparation method |
| CN110875483A (en) * | 2018-09-04 | 2020-03-10 | 大连融科储能装备有限公司 | Integrated electrode-bipolar plate structure and preparation method |
| CN112467162A (en) * | 2019-09-06 | 2021-03-09 | 杭州中科氢能科技有限公司 | Bipolar plate, bipolar plate processing device and bipolar plate preparation method |
| CN114976090A (en) * | 2022-06-02 | 2022-08-30 | 开封时代新能源科技有限公司 | Method for manufacturing integrated bipolar reaction plate |
| 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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Application publication date: 20120711 |