CN1845368A - Current collection plate for all vanadium redox flow battery - Google Patents
Current collection plate for all vanadium redox flow battery Download PDFInfo
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- CN1845368A CN1845368A CNA2006100114686A CN200610011468A CN1845368A CN 1845368 A CN1845368 A CN 1845368A CN A2006100114686 A CNA2006100114686 A CN A2006100114686A CN 200610011468 A CN200610011468 A CN 200610011468A CN 1845368 A CN1845368 A CN 1845368A
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- collector plate
- vanadium redox
- redox battery
- plate
- flow field
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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
- Y02E60/10—Energy storage using batteries
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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
Abstract
The structure of a collecting board for full-vanadium redox fluid cell comprises: the high-density graphite plate dipped by epoxy resin or phenol resin, and a S-shaped flow field with width rate of ridge and channel as 1:0.5~6 and the rate between the channel depth to channel width as 1:1~5. The advantages of this invention include: 1) small resistance, stable chemical property, and strong ability to bear large current charge/discharge; 2) strong rigidity and intensity; 3) smooth flow of the electrolyte, and little polarization on cell.
Description
Technical field
The invention belongs to technical field of chemical power, more particularly relate to the design of a kind of collector plate for all-vanadium redox flow battery and structure of flow field thereof.
Background technology
Vanadium redox battery is respectively with VO
2+/ VO
2 +And V
2+/ V
3+As the positive and negative electrode oxidation-reduction pair, the two is mixed with electrolyte with the form of sulfate respectively leaves in two fluid reservoirs, by circulating pump electrolyte is transported in the anode chamber that separates with barrier film and the cathode chamber battery during work and discharges and recharges.
Fig. 1 is the vanadium redox battery structural representation of document [ElectrochimicaActa, 47,2001] report.It is by collector plate 1, electrode 2 and barrier film 3 compositing monomer batteries 4, and is docile and obedient that preface is parallel to stack, and forms battery pile by series connection.
Characteristics such as the vanadium redox battery collector plate should have that resistivity is low, stable chemical performance, liquid-impermeable, bigger specific area and certain mechanical strength.At present, the vanadium redox battery collector plate all forms with organic polymer (as polyethylene, polypropylene and polyvinyl chloride etc.) and inorganic conductive material (carbon fiber, acetylene black and graphite powder etc.) blend roll-in.By with polypropylene and polyvinyl chloride and carbon fiber blend, be pressed into conductive plastic plate as [battery, 35 (2), 2005] such as Li Xiaogang, prepared the collector plate of vanadium redox battery again through chemical treatment afterwards through hot-rolling.There is following problems in this collector plate:
1. the resistance of conductive plastic current collector plate is big, the chemical property instability, and the vanadium redox battery of making collector plate with conductive plastic plate bears the high current charge-discharge ability;
2. little, the easily deformation of the rigidity of conductive plastic current collector plate and intensity causes vanadium redox battery to be difficult to sealing, and the battery sepage is serious;
3. because the vanadium redox battery collector plate does not design the flow field, have some setbacks so electrolyte flows at inside battery, easily form " dead angle " that no electrolyte flows through, battery polarization is serious.
Summary of the invention
The objective of the invention is to solve deficiency and the defective that prior art exists, a kind of vanadium redox battery collector plate of new structure is provided.By changing the material of collector plate, and optimize the flow field structure of collector plate, make that its electrolyte flow is smooth and easy, the internal resistance of cell is little, good sealing effect, bear the high current charge-discharge ability thereby further improve vanadium redox battery.
Technical scheme of the present invention is as follows:
A kind of collector plate that is used for vanadium redox battery, it is characterized in that: the high-density graphite plate that described collector plate adopts epoxy resin or resin impregnating to cross, be carved with serpentine flow on this collector plate, the ratio of wide B of the ridge of serpentine flow and furrow width A is 1: 0.5-6.
Technical characterictic of the present invention also is: the ditch depth C of the serpentine flow on the collector plate and the ratio of furrow width A are 1: 1～5.
The channel strips number of the serpentine flow on the collector plate of the present invention is 2～8 and walks abreast.
Vanadium redox battery collector plate provided by the invention is compared with existing collector plate, have the following advantages and the high-lighting effect: it is strong that 1. little, the stable chemical performance of the resistance of high-density graphite composite current collecting plate, the vanadium redox battery of making collector plate with the high-density graphite composite plate are born the high current charge-discharge ability; 2. high-density graphite composite current collecting plate rigidity and intensity big, be difficult for deformation, the vanadium redox battery of making collector plate with the high-density graphite composite plate seals easily, no sepage phenomenon generation; 3. electrolyte is mobile smooth and easy in the collector plate flow field, and whole flow field can not occur not having electrolyte stream warp " dead angle ", and battery polarization is little.
Description of drawings
Fig. 1 is the structural representation of traditional vanadium redox battery.
Fig. 2 is the structural representation of vanadium redox battery provided by the invention.
Fig. 3 is a vanadium redox battery collector plate flow field structure schematic diagram provided by the invention.
Fig. 4 is a collector plate provided by the invention flow field degree of depth schematic diagram.
Embodiment
Fig. 2 is a vanadium redox battery structural representation provided by the invention.It is by collector plate 1, electrode 2 and barrier film 3 compositing monomer batteries 4, and is docile and obedient that preface is parallel to stack; Collector plate 1 is that the high-density graphite plate with epoxy resin impregnated mistake is made, and is carved with serpentine flow 5 on collector plate.The wide B of the ridge 7 of serpentine flow is 1 with the ratio of the wide A of ditch 6: 0.5-6; The ratio of ditch depth and furrow width (being C and A) is 1: 1-5; The channel strips number of serpentine flow 5 is 1, also can be 2～8 parallel (referring to Fig. 3, Fig. 4).
Example 1: make collector plate with epoxy resin impregnated high-density graphite plate, be carved with a serpentine flow on collector plate, the flow field is long to be 120mm, and wide is 120mm, and the wide of flow field outer rim 8 is 15mm; Ridge wide ratio with furrow width in flow field is 1: 6, and the flow field ditch depth is 1: 5 with the ratio of furrow width.This collector plate and electrode and barrier film are assembled into vanadium redox battery, carry out charge-discharge test, it is 89.1% that its first five time discharges and recharges average coulombic efficiency.
Example 2: the high-density graphite plate with resin impregnating is made collector plate, is carved with eight parallel serpentine flow on collector plate, and the flow field is long to be 120mm, and wide is 170mm, and the wide of flow field outer rim 8 is 15mm; Ridge wide ratio with furrow width in flow field is 1: 0.5, and the flow field ditch depth is 1: 1 with the ratio of furrow width.This collector plate and electrode and barrier film are assembled into vanadium redox battery, carry out charge-discharge test, it is 86.5% that its first five time discharges and recharges average coulombic efficiency.
Example 3: make collector plate with epoxy resin impregnated high-density graphite plate, be carved with four parallel serpentine flow on collector plate, the flow field is long to be 260mm, and wide is 260mm, and the wide of flow field outer rim 8 is 20mm; Ridge wide ratio with furrow width in flow field is 1: 3.3, and the flow field ditch depth is 1: 3.3 with the ratio of furrow width.This collector plate and electrode and barrier film are assembled into vanadium redox battery, carry out charge-discharge test, it is 95.8% that its first five time discharges and recharges average coulombic efficiency.
Claims (3)
1. collector plate that is used for vanadium redox battery, it is characterized in that: the high-density graphite plate that described collector plate (1) adopts epoxy resin or resin impregnating to cross, be carved with serpentine flow (5) on this collector plate, the ratio of wide B of the ridge of serpentine flow and furrow width A is 1: 0.5～6.
2. according to the described collector plate that is used for vanadium redox battery of claim 1, it is characterized in that: the ditch depth C of the serpentine flow on the collector plate and the ratio of furrow width A are 1: 1～5.
3. according to claim 1 or the 2 described collector plate that are used for vanadium redox battery, it is characterized in that the channel strips number of serpentine flow is 2～8 and walks abreast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100114686A CN1845368A (en) | 2006-03-10 | 2006-03-10 | Current collection plate for all vanadium redox flow battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100114686A CN1845368A (en) | 2006-03-10 | 2006-03-10 | Current collection plate for all vanadium redox flow battery |
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| Publication Number | Publication Date |
|---|---|
| CN1845368A true CN1845368A (en) | 2006-10-11 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100114686A Pending CN1845368A (en) | 2006-03-10 | 2006-03-10 | Current collection plate for all vanadium redox flow battery |
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| CN (1) | CN1845368A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101483240B (en) * | 2008-03-03 | 2010-12-29 | 上海弘枫石墨制品有限公司 | Ultra-thin graphite bi-polar plate processing method used for fuel cell |
| CN102299356A (en) * | 2011-07-18 | 2011-12-28 | 中国东方电气集团有限公司 | Current collector of flow battery and flow battery |
| CN102931427A (en) * | 2012-11-07 | 2013-02-13 | 北京好风光储能技术有限公司 | Lithium-ion flow battery reactor |
| CN103988340A (en) * | 2011-12-20 | 2014-08-13 | 联合工艺公司 | Flow battery with mixed flow |
| CN106256040A (en) * | 2015-04-14 | 2016-12-21 | 住友电气工业株式会社 | Unit framework for redox flow batteries, the stack of cells stack for redox flow batteries and redox flow batteries |
| CN106384833A (en) * | 2016-11-11 | 2017-02-08 | 攀钢集团攀枝花钢铁研究院有限公司 | Vanadium cell electrode assembly formed by modified carbon fiber felt and graphite current collector |
| CN108368623A (en) * | 2015-11-17 | 2018-08-03 | 水吉能公司 | Electrochemical cell flow field |
| US11056698B2 (en) | 2018-08-02 | 2021-07-06 | Raytheon Technologies Corporation | Redox flow battery with electrolyte balancing and compatibility enabling features |
| US11271226B1 (en) | 2020-12-11 | 2022-03-08 | Raytheon Technologies Corporation | Redox flow battery with improved efficiency |
-
2006
- 2006-03-10 CN CNA2006100114686A patent/CN1845368A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101483240B (en) * | 2008-03-03 | 2010-12-29 | 上海弘枫石墨制品有限公司 | Ultra-thin graphite bi-polar plate processing method used for fuel cell |
| CN102299356A (en) * | 2011-07-18 | 2011-12-28 | 中国东方电气集团有限公司 | Current collector of flow battery and flow battery |
| CN103988340A (en) * | 2011-12-20 | 2014-08-13 | 联合工艺公司 | Flow battery with mixed flow |
| JP2015505147A (en) * | 2011-12-20 | 2015-02-16 | ユナイテッド テクノロジーズ コーポレイションＵｎｉｔｅｄ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏｒｐｏｒａｔｉｏｎ | Flow battery using mixed flow |
| CN102931427A (en) * | 2012-11-07 | 2013-02-13 | 北京好风光储能技术有限公司 | Lithium-ion flow battery reactor |
| CN106256040A (en) * | 2015-04-14 | 2016-12-21 | 住友电气工业株式会社 | Unit framework for redox flow batteries, the stack of cells stack for redox flow batteries and redox flow batteries |
| US10847813B2 (en) | 2015-11-17 | 2020-11-24 | Hydrogenics Corporation | Flow fields for electrochemical cell |
| CN108368623A (en) * | 2015-11-17 | 2018-08-03 | 水吉能公司 | Electrochemical cell flow field |
| CN108368623B (en) * | 2015-11-17 | 2023-01-10 | 水吉能公司 | Flow field plate set for electrochemical cell |
| CN106384833B (en) * | 2016-11-11 | 2019-05-03 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of vanadium battery electrode component of modified carbon fiber felt and graphite collector composition |
| CN106384833A (en) * | 2016-11-11 | 2017-02-08 | 攀钢集团攀枝花钢铁研究院有限公司 | Vanadium cell electrode assembly formed by modified carbon fiber felt and graphite current collector |
| US11056698B2 (en) | 2018-08-02 | 2021-07-06 | Raytheon Technologies Corporation | Redox flow battery with electrolyte balancing and compatibility enabling features |
| US11637298B2 (en) | 2018-08-02 | 2023-04-25 | Raytheon Technologies Corporation | Redox flow battery with electrolyte balancing and compatibility enabling features |
| US11271226B1 (en) | 2020-12-11 | 2022-03-08 | Raytheon Technologies Corporation | Redox flow battery with improved efficiency |
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