CN106876765B - A kind of flow cell pile - Google Patents
A kind of flow cell pile Download PDFInfo
- Publication number
- CN106876765B CN106876765B CN201510924092.7A CN201510924092A CN106876765B CN 106876765 B CN106876765 B CN 106876765B CN 201510924092 A CN201510924092 A CN 201510924092A CN 106876765 B CN106876765 B CN 106876765B
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- China
- Prior art keywords
- pile
- bipolar plates
- electrode
- conductive
- gasket
- Prior art date
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- 229920001971 elastomer Polymers 0.000 claims abstract description 26
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 3
- 229910052720 vanadium Inorganic materials 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 239000011231 conductive filler Substances 0.000 claims description 11
- 238000005087 graphitization Methods 0.000 claims description 5
- 229920002943 EPDM rubber Polymers 0.000 claims description 4
- 239000006229 carbon black Substances 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 229920006124 polyolefin elastomer Polymers 0.000 claims description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 2
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 229910007567 Zn-Ni Inorganic materials 0.000 claims description 2
- 229910007614 Zn—Ni Inorganic materials 0.000 claims description 2
- ZRXYMHTYEQQBLN-UHFFFAOYSA-N [Br].[Zn] Chemical compound [Br].[Zn] ZRXYMHTYEQQBLN-UHFFFAOYSA-N 0.000 claims description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052794 bromium Inorganic materials 0.000 claims description 2
- 150000001721 carbon Chemical class 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- HYHCSLBZRBJJCH-UHFFFAOYSA-N sodium polysulfide Chemical compound [Na+].S HYHCSLBZRBJJCH-UHFFFAOYSA-N 0.000 claims description 2
- -1 fluorubber Polymers 0.000 claims 1
- 238000012856 packing Methods 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 238000004146 energy storage Methods 0.000 abstract description 20
- 239000004033 plastic Substances 0.000 abstract description 3
- 229920003023 plastic Polymers 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 3
- 239000008151 electrolyte solution Substances 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000003014 ion exchange membrane Substances 0.000 description 1
- 150000002500 ions Chemical group 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- H01M8/18—Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
-
- 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
-
- 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
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
-
- 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
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0276—Sealing means characterised by their form
-
- 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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
-
- 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
A kind of flow cell pile, pile by two sections or the above single battery group of two sections at, monocell includes the bipolar plates successively overlapped in order, electrode frame, gasket, electrode, film, electrode, gasket, electrode frame, bipolar plates, wherein bipolar plates are conductive rubber material, electrode frame and bipolar plates directly contact gluing, sealing, without placing gasket between electrode frame and bipolar plates.With used in existing flow battery conductive plastics as bipolar plates compared with, since conductive rubber material has sealing function, the gasket between electrode and bipolar plates can be saved, to simplify battery structure, seal member is saved, the sealing cost of liquid flow energy storage battery can be reduced.
Description
Technical field
The present invention relates to the liquid flow energy storage battery fields in chemical energy storage technology, in particular to all-vanadium liquid flow energy storage battery.
Background technique
All-vanadium liquid flow energy storage battery is because it is mutually indepedent with output power and capacity, system flexible design；Energy efficiency
Height, the service life is long, operation stability and high reliablity, and self discharge is low；Addressing freedom degree is big, pollution-free, maintenance is simple, operation cost
It is low, it is highly-safe the advantages that, there is vast potential for future development in terms of scale energy storage, it is considered to be solve solar energy, wind energy etc.
The effective ways of renewable energy system randomness and intermittent unstable state feature, in renewable energy power generation and intelligence electricity
There is great demand in net construction.
All-vanadium liquid flow energy storage battery is mainly by pile, electrolyte solution, electrolyte solution storage for system, battery management body
The part such as system, charge and discharge system, energy storage monitoring system forms, and pile is the core of redox flow battery energy storage system, and pile is usually
By ten several sections of or tens of section monocells with particular requirement, it is formed by stacking by the form of filter press.All-vanadium flow battery monocell
It is the most basic unit for assembling pile.As shown in Figure 1, being one molten for separating positive and negative anodes electrolyte in the center of monocell
Liquid, proton conducting (ion) form the amberplex of current loop.Monosymmetric in this diaphragm is configured with electrode, electrode
Frame, gasket, bipolar plates, collector plate, insulation board, end plate and screw rod, nut etc..Current bipolar plate material is mostly that carbon modeling is compound
Material only acts the connection realized between monocell, and the electrolyte solution between adjacent single cells is isolated, is collected simultaneously bipolar plates two sides
The effect of electric current caused by electrode reaction, itself is without sealing function.To guarantee sealing, electrode frame two sides and bipolar plates and ion
Exchange membrane contact position is both needed to configured with gasket, leads to that structure is complicated, seals higher cost.
Summary of the invention
To solve the above problems, the present invention uses conductive rubber material as bipolar plates, as shown in Fig. 2, utilizing conductive rubber
The sealing function that glue material itself has, without placing gasket 3 between electrode frame 4 and bipolar plates 2.With the prior art (figure
1) it compares, the usage quantity of gasket is reduced to 2 from 4 in single battery, to considerably reduce liquid flow energy storage battery
Sealing cost.Further, since the reduction of gasket, cell thickness also accordingly reduces, and the weight and volume of battery also accordingly drops
Low, energy density increases.
To achieve the above object, the specific technical solution that the present invention uses is as follows:
The present invention provides a kind of flow cell pile, You Liangjie or the above single battery group of two sections at monocell includes by suitable
Bipolar plates that sequence successively overlaps, electrode frame, gasket, electrode, film, electrode, gasket, electrode frame, bipolar plates, bipolar plates are to lead
Electric rubber material, electrode frame and bipolar plates directly contact gluing, sealing, without placing gasket between electrode frame and bipolar plates.Institute
The conductivity of conductive rubber material is stated not less than 5S/cm, it is preferable that be 10~1000S/cm.The conductive rubber material is by leading
Electric filler and rubber components composition, the two mass ratio are 1/1~4/1, it is preferable that are 3/2~3/1.
In view of the electrolyte of liquid flow energy storage battery is mostly strong acid or strong alkaline electrolytes, in the conductive rubber material
Conductive filler is carbon class conductive filler, such as one or more of graphite powder, carbon black and carbon fiber, it is preferable that for tool
There is the carbon class conductive filler of high graphitization degree, degree of graphitization is 60~99%.
Rubber components in the conductive rubber material are the rubber of energy strong alkali-acid resistance, such as fluorubber, ethylene-propylene-diene monomer
One or more of glue and polyolefin elastomer.
Pile of the present invention can promote the use of zinc-bromine flow battery, sodium polysulfide bromine flow battery and Zn-Ni liquid battery
In equal liquid flow energy storage batteries.
The present invention has the advantage that
(1) pile of the invention is used, the usage quantity of gasket is reduced to 2 from 4 in single battery, thus substantially
Degree reduces the sealing cost of liquid flow energy storage battery.
(2) pile of the invention is used, due to the reduction of gasket quantity, cell thickness also accordingly reduces, the weight of battery
Amount and volume also accordingly reduce, and energy density increases.
(3) flow cell pile of the invention reduces number of components, easily operated assembling, and sealing material compared with original structure
Dosage is reduced, and has commercialization application value.
Detailed description of the invention
Fig. 1 is the single-cell structure schematic diagram of flow cell pile in the prior art；
Wherein: 1 cell end plate；2 bipolar plates；3 gaskets；4 electrode frames；5 porous electrodes；6 amberplexes
Fig. 2 is the single-cell structure schematic diagram of liquid flow energy storage battery of the present invention.
Wherein: 1 cell end plate；2 bipolar plates；3 gaskets；4 electrode frames；5 porous electrodes；6 amberplexes
Specific embodiment
The present invention is described in detail below by specific embodiment.
Embodiment 1
Choosing conductivity is the conductive fluorubber plate of 20S/cm as bipolar plates, wherein conductive filler is graphite powder, graphite
Change degree is 97%, mass ratio 60%；Rubber components are fluorubber, mass ratio 40%.It is assembled into according to structure shown in Fig. 2
All-vanadium liquid flow energy storage monocell, wherein electrode frame 4 is 3mm thick, and electrode 5 is the carbon felt of 5mm thickness, and gasket 3 is the fluorine of 0.5mm thickness
Rubber.As shown in table 1, using all-vanadium flow monocell of the invention, current density 80mA/cm2When, voltage efficiency and energy
Efficiency is respectively 88.2% and 83.7%, is increased compared with the battery efficiency in comparative example.
Comparative example
All-vanadium liquid flow energy storage monocell is assembled into according to structure shown in FIG. 1, wherein choosing conductivity is leading for 20S/cm
For electric plastic plate as bipolar plates, electrode frame 4 is 3mm thick, and electrode 5 is the carbon felt of 5mm thickness, and gasket 3 is the fluorine rubber of 0.5mm thickness
Glue.As shown in table 1, current density 80mA/cm2When, voltage efficiency and energy efficiency are respectively 87.2% and 83.2%.
Embodiment 2
Choosing conductivity is the conductive ethylene-propylene-diene monomer offset plate of 10S/cm as bipolar plates, wherein conductive filler is carbon black,
Degree of graphitization is 60%, mass ratio 30%；Rubber components are ethylene propylene diene rubber, mass ratio 70%.According to shown in Fig. 2
Structure is assembled into all-vanadium liquid flow energy storage monocell, and wherein electrode frame 4 is 3mm thick, and electrode 5 is the carbon felt of 5mm thickness, and gasket 3 is
The fluorubber of 0.5mm thickness.As shown in table 1, using all-vanadium flow monocell of the invention, current density 80mA/cm2When, electricity
It presses efficiency and energy efficiency is respectively 87.6% and 84.1%, increase compared with the battery efficiency in comparative example.
Embodiment 3
Choosing conductivity is the conductive polyolefin elastomeric plates of 50S/cm as bipolar plates, wherein conductive filler is graphite
Powder and carbon black, mass ratio are respectively 40% and 20%；Polymer matrix component is polyolefin elastomer, mass ratio 40%.It presses
It is assembled into all-vanadium liquid flow energy storage monocell according to structure shown in Fig. 2, wherein electrode frame 4 is 3mm thick, and electrode 5 is the carbon of 5mm thickness
Felt, gasket 3 are the fluorubber of 0.5mm thickness.As shown in table 1, using all-vanadium flow monocell of the invention, current density is
80mA/cm2When, voltage efficiency and energy efficiency are respectively 88.9% and 84.6%, are mentioned compared with the battery efficiency in comparative example
It is high.
Battery efficiency of the table 1 using all-vanadium liquid flow energy storage monocell when battery structure of the present invention under different current densities
With used in existing flow battery conductive plastics as bipolar plates compared with, due to conductive rubber material have sealing function
Can, the gasket between electrode and bipolar plates can be saved, to simplify battery structure, save seal member, liquid stream can be reduced
The sealing cost of energy-storage battery.
Claims (7)
1. a kind of flow cell pile, it is characterised in that: pile is by two sections or the above single battery group of two sections at monocell includes pressing
Bipolar plates, electrode frame, gasket, electrode, film, electrode, gasket, electrode frame, the bipolar plates that sequence successively overlaps, wherein bipolar
Plate is conductive rubber material, and electrode frame and bipolar plates directly contact gluing, sealing, close without placing between electrode frame and bipolar plates
Packing;The conductive rubber material is made of conductive filler and rubber components, and the two mass ratio is 1/1 ~ 4/1；The rubber group
Be divided into can strong alkali-acid resistance one or both of rubber, including fluorubber, ethylene propylene diene rubber, polyolefin elastomer with
On.
2. pile according to claim 1, it is characterised in that: the conductivity of the conductive rubber material is not less than 5 S/cm.
3. pile according to claim 2, it is characterised in that: the conductivity of the conductive rubber material is 10~1000 S/
cm。
4. pile according to claim 1, it is characterised in that: the conductive rubber material is by conductive filler and rubber components group
At the two mass ratio is 3/2 ~ 3/1.
5. pile according to claim 4, it is characterised in that: the conductive filler is carbon class conductive filler, including graphite
One or more of powder, carbon black, carbon fiber.
6. pile according to claim 5, it is characterised in that: the conductive filler is that the carbon class with high graphitization degree are led
Electric filler, degree of graphitization are 60 ~ 99%.
7. the pile according to claim 1, it is characterised in that: the pile is all-vanadium flow battery pile, zinc bromine liquid stream
Battery stack, sodium polysulfide bromine flow cell pile or Zn-Ni liquid battery pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510924092.7A CN106876765B (en) | 2015-12-13 | 2015-12-13 | A kind of flow cell pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510924092.7A CN106876765B (en) | 2015-12-13 | 2015-12-13 | A kind of flow cell pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106876765A CN106876765A (en) | 2017-06-20 |
| CN106876765B true CN106876765B (en) | 2019-08-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510924092.7A Active CN106876765B (en) | 2015-12-13 | 2015-12-13 | A kind of flow cell pile |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109755560A (en) * | 2017-11-08 | 2019-05-14 | 中国科学院大连化学物理研究所 | A kind of zinc-nickel double flow battery |
| CN109786799B (en) * | 2017-11-10 | 2021-09-14 | 中国科学院大连化学物理研究所 | Zinc-nickel flow battery |
| CN109841839B (en) * | 2017-11-27 | 2021-09-28 | 中国科学院大连化学物理研究所 | Bipolar plate for flow battery and preparation and application thereof |
| CN115395068B (en) * | 2022-10-27 | 2022-12-27 | 扬州西融储能科技有限公司 | Production and processing method of flow battery galvanic pile |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102683724A (en) * | 2011-03-14 | 2012-09-19 | 中国科学院金属研究所 | Method for preparing high-conductivity conductive rubber bipolar plate for vanadium redox battery |
| CN104716392A (en) * | 2013-12-15 | 2015-06-17 | 中国科学院大连化学物理研究所 | Flow cell structure |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI336538B (en) * | 2006-03-22 | 2011-01-21 | Ind Tech Res Inst | Electrically conductive composite |
| US20100021790A1 (en) * | 2008-05-30 | 2010-01-28 | Oakland University | Elastomeric bipolar plates |
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2015
- 2015-12-13 CN CN201510924092.7A patent/CN106876765B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102683724A (en) * | 2011-03-14 | 2012-09-19 | 中国科学院金属研究所 | Method for preparing high-conductivity conductive rubber bipolar plate for vanadium redox battery |
| CN104716392A (en) * | 2013-12-15 | 2015-06-17 | 中国科学院大连化学物理研究所 | Flow cell structure |
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| Publication number | Publication date |
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| CN106876765A (en) | 2017-06-20 |
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Application publication date: 20170620 Assignee: Kaifeng Times New Energy Technology Co.,Ltd. Assignor: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES Contract record no.: X2021210000032 Denomination of invention: A flow battery stack Granted publication date: 20190809 License type: Common License Record date: 20210705 |
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Application publication date: 20170620 Assignee: Xinxing Ductile Iron Pipes Co.,Ltd. Assignor: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES Contract record no.: X2023210000177 Denomination of invention: A liquid flow battery stack Granted publication date: 20190809 License type: Common License Record date: 20231116 |