CN207441864U - A kind of zinc-bromine flow battery electrode frame structure and include its flow battery - Google Patents
A kind of zinc-bromine flow battery electrode frame structure and include its flow battery Download PDFInfo
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- CN207441864U CN207441864U CN201721582236.6U CN201721582236U CN207441864U CN 207441864 U CN207441864 U CN 207441864U CN 201721582236 U CN201721582236 U CN 201721582236U CN 207441864 U CN207441864 U CN 207441864U
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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 utility model is related to a kind of electrode frame structures, electrode frame carries the plate-like structure of through hole for middle part, cavity of the middle part void region as accommodating electrode where through hole, the edge of one side surface of electrode frame tablet is provided with annular seal groove, and annular groove is offered to the direction away from through hole in the edge of one side surface through hole of electrode frame.On the one hand the utility model reduces anode gasket, reduce cost.Membrane is entirely sealed in electrode frame by what is more important, different in external environment from traditional membrane section, has thoroughly prevented the problem of bromine simple substance is permeated by membrane section.
Description
Technical field
A kind of zinc-bromine flow battery the utility model is related to electrode frame structure and with its assembling.
Background technology
Zinc-bromine flow battery has the advantages that high-energy density, low cost compared to all-vanadium flow battery.Zinc bromine liquid energy-storage
Battery theoretical open circuit voltage 1.80V or so, theoretical energy density 430Wh/kg.Zinc-bromine flow battery positive and negative anodes are separated by membrane,
Both sides electrolyte solution is ZnBr2Solution.Under the action of kinetic pump, electrolyte solution is closed what fluid reservoir and battery were formed
It closes and is circulated in circuit.Electrical potential difference between positive and negative anodes electrode pair is the power to react, zinc-bromine flow battery
Electrode reaction is：
Anode：
Cathode：
The research of zinc-bromine flow battery starts from beginning of the eighties late 1970s.Zinc-bromine flow battery the U.S. develop compared with
Soon, ZBB companies in the U.S. provide a variety of commercialization modules such as 50kWh and 500kWh and apply and show for 2008 to potential customers
Model, and zinc bromine liquid flow energy storage battery is positioned at the fields such as electric vehicle power sources, wind and solar energy energy-storage battery, emergency power supply.
Nevertheless, zinc-bromine flow battery will reach commercial application, there are still many problems and challenge needs are further
It solves.
The environmental-friendly sex chromosome mosaicism of anode bromine simple substance.The bromine environmental pollution and infiltration of anode are to restrict zinc bromine liquid stream
Battery is practical and the key issue of industrialization.When battery charges the bromine simple substance that generates can not discharge regime become completely bromine from
On the one hand son causes the battery coulombic efficiency of following cycle to decline, it is excessively high to be on the one hand easy to cause anode bromine elemental concentration, infiltration
It is polluted into environment.For self discharge as reduction and environmental pollution, existing solution method is：1) it is, molten in electrolyte
Bromine simple substance complexing agent is added in liquid, reduces the bromine elemental concentration of free state.Common bromine simple substance complexing agent is mainly that bromination is water-soluble
Property organic compound, by complexing agent be complexed bromine simple substance it is independent into phase the characteristics of, reduce free state bromine simple substance in electrolyte solution
Content solves bromine simple substance infiltration problem；2), by developing cheap resistance bromine membrane, on the basis of ionic conduction is ensured, regulation and control
Bromine membrane thicknesses and pore-size distribution are hindered to realize the isolation of positive and negative electrode electrolyte solution, reduce the infiltration of bromine.
But in fact, the infiltration of reply bromine simple substance at present and etching problem are still without preferably method.Therefore, in electricity
During the assembling of pond group, it is necessary to using the gasket of the materials such as PP, PE bromine simple substance to be prevented to leak out.Moreover, compared to full vanadium liquid
Galvanic battery, the sealing difficulty bigger of bromine simple substance because the form of gaseous volatilization is presented in it, are easy to by porous septum
Portion's horizontal infiltration is to outside.
Utility model content
The utility model, for the sealing problem of zinc-bromine flow battery anode bromine simple substance, it is proposed that using PP, PE membrane certainly
The telescopicing performance of body, is provided with annular groove in electrode frame, breaks away from traditional membrane, gasket, electrode frame three connect successively
Tactile form is changed to membrane being directly placed into the annular groove of the electrode frame with annular groove, by adjusting annular groove
The thickness of depth and membrane in subsequent be closely assembled, realizes sealing effect.On the one hand the utility model reduces anode sealing
Pad, reduces cost.Membrane is entirely sealed in electrode frame by what is more important, with traditional membrane section exposed to outer
It is different in portion's environment, thoroughly prevent the problem of bromine simple substance is permeated by membrane section.
The purpose of this utility model is achieved through the following technical solutions：
A kind of electrode frame structure, electrode frame carry the plate-like structure of through hole, the middle part vacancy section where through hole for middle part
Cavity of the domain as accommodating electrode, the edge of one side surface of electrode frame tablet is provided with annular seal groove, in electrode frame
The edge of one side surface through hole offers annular groove to the direction away from through hole.
Annular groove is between sealed groove and tablet middle through-hole；The depth of annular groove is less than membrane thicknesses.
Battery include sequential layer fold positive end plate, anode collection plate, electrode frame described in the utility model, anode, membrane,
Cathode, cyclic sealing gasket, negative electrode frame, negative pole currect collecting plate, negative end plate.
The electrode frame annular recess is thick in the membrane that the depth of plate level to annular groove bottom surface is 80-90%
Degree.
The membrane is the porous or dense membrane of PP or PE materials.
The membrane is rectangle, and length and wide size dimension are less than or equal to the length and width ruler of rectangle annular groove
It is very little, more than rectangular through holes length and width dimensions.
The membrane thicknesses are 100-1000 μm.
Gask-O-Seal can be used acidproof sheet rubber or use acidproof rubber covered wire.
Electrode is using graphite felt or carbon felt or can also use carbon paper；Collector plate is metal or carbon materials lumber；Electrode
Framework material is polyethylene, polypropylene, polyvinyl chloride or ABS；The end plate material can be that the rigidity such as aluminium or stainless steel are larger
Metal material or bakelite plate or plastic plate.
Description of the drawings
Fig. 1, the electrode frame front view with annular groove；1- annular grooves；2- sealed grooves；3- through holes
Fig. 2, the electrode frame with annular groove and electrode, the assembling schematic diagram of gasket；
Wherein 1- cathode carbon felt；2- anode carbon felts；3- membranes；4- gaskets；5- carries the anode electrode frame of annular groove；
6- negative electrode frames
Fig. 3, traditional electrode frame front view；
Fig. 4, traditional electrode frame and gasket, electrode, the assembling schematic diagram of gasket.
Wherein:1- cathode carbon felts；2- anode carbon felts；3- membranes；4- gaskets；5- gaskets；6- anode electrode frames；7- is born
Pole electrode frame
Specific embodiment
Embodiment 1
By the utility model proposes electrode frame (Fig. 1,2 shown in) assembling pile exemplified by, by 10 section monocells assemblings
It forms, circuit connection, electrode area 875cm is carried out using bipolar plates between every batteries2, using 500 μm of PP perforated membranes, ring
450 μm of connected in star depth.Electrolyte is 2.0mol/L zinc bromides, and charging and discharging currents density is 40mA/cm2, charging time 1h；
The volume of anode electrolyte and electrolyte liquid is 20L.
Battery pack coulombic efficiency 97%, voltage efficiency 84%, energy efficiency 81%.Coulomb individual pen rate of decay 0.001%.
Comparative example
Using the electrode frame shown in Fig. 3,4, mutually isostructural pile is assembled using material identical with embodiment, by 10
Section monocell assembles, and circuit connection, electrode area 875cm are carried out using bipolar plates between every batteries2, using 500 μ
MPP perforated membranes, electrolyte is 2.0mol/L zinc bromides, and charging and discharging currents density is 40mA/cm2, charging time 1h；Anode
The volume of electrolyte and electrolyte liquid is 20L.
Battery pack coulombic efficiency 95%, voltage efficiency 82%, energy efficiency 78%.Coulomb individual pen rate of decay 0.01%.
As can be seen that the electrode frame of the utility model and the battery pack of assembling are imitated with higher coulomb from battery performance
Rate.What is more important prevents bromine simple substance, to exosmosis, to ensure that by membrane due to the electrode frame of this patent utility model
The coulombic efficiency of battery pack keeps stablizing, the substantially unattenuated battery pack compared to the assembling of traditional electrode frame.
Claims (6)
1. a kind of zinc-bromine flow battery electrode frame structure, electrode frame carries the plate-like structure of through hole for middle part, where through hole
Cavity of the middle part void region as accommodating electrode, it is recessed that the edge of one side surface of electrode frame tablet is provided with annular seal
Slot, it is characterised in that：In the edge of one side surface through hole of electrode frame annular groove is offered to the direction away from through hole.
2. electrode frame structure as described in claim 1, it is characterised in that：Annular groove is in sealed groove with leading in the middle part of tablet
Between hole；The depth of annular groove is less than membrane thicknesses.
3. a kind of zinc-bromine flow battery using the electrode frame structure assembling of claim 1 or 2, it is characterised in that：Battery pack
It is close to include positive end plate, anode collection plate, the electrode frame of claim 1 or 2, anode, membrane, cathode, ring-type that order is stacked
Packing, negative electrode frame, negative pole currect collecting plate, negative end plate.
4. battery as claimed in claim 3, it is characterised in that：The electrode frame annular recess of claim 1 or 2 is in tablet
The membrane thicknesses that the depth of plane to annular groove bottom surface is 80-90%.
5. battery as claimed in claim 3, it is characterised in that：The membrane is rectangle, length and wide size dimension
Less than or equal to the length and width dimensions of rectangle annular groove, more than rectangular through holes length and width dimensions.
6. the battery as described in claim 3 or 4, it is characterised in that：The membrane thicknesses are 100-1000 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721582236.6U CN207441864U (en) | 2017-11-23 | 2017-11-23 | A kind of zinc-bromine flow battery electrode frame structure and include its flow battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721582236.6U CN207441864U (en) | 2017-11-23 | 2017-11-23 | A kind of zinc-bromine flow battery electrode frame structure and include its flow battery |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109575479A (en) * | 2018-12-07 | 2019-04-05 | 金发科技股份有限公司 | A kind of PVC material and its application in zinc-bromine flow battery positive and negative anodes frame |
| CN109830706A (en) * | 2017-11-23 | 2019-05-31 | 中国科学院大连化学物理研究所 | A kind of electrode frame structure and the zinc-bromine flow battery with its assembling |
| CN111106373A (en) * | 2018-10-25 | 2020-05-05 | 中国科学院大连化学物理研究所 | Zinc-bromine storage battery |
| CN111261895A (en) * | 2018-11-30 | 2020-06-09 | 中国科学院大连化学物理研究所 | Flow battery electrode frame and application thereof and flow battery |
| CN113036170A (en) * | 2019-12-09 | 2021-06-25 | 中国科学院大连化学物理研究所 | Zinc-bromine battery |
| CN113889643A (en) * | 2020-07-03 | 2022-01-04 | 中国科学院大连化学物理研究所 | Preparation of integrated battery structure for all-vanadium redox flow battery, battery structure and application |
| CN113889638A (en) * | 2020-07-03 | 2022-01-04 | 中国科学院大连化学物理研究所 | Integrated battery structure for all-vanadium redox flow battery, preparation and application |
-
2017
- 2017-11-23 CN CN201721582236.6U patent/CN207441864U/en active Active
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109830706A (en) * | 2017-11-23 | 2019-05-31 | 中国科学院大连化学物理研究所 | A kind of electrode frame structure and the zinc-bromine flow battery with its assembling |
| CN111106373B (en) * | 2018-10-25 | 2021-05-25 | 中国科学院大连化学物理研究所 | Zinc-bromine storage battery |
| CN111106373A (en) * | 2018-10-25 | 2020-05-05 | 中国科学院大连化学物理研究所 | Zinc-bromine storage battery |
| CN111261895A (en) * | 2018-11-30 | 2020-06-09 | 中国科学院大连化学物理研究所 | Flow battery electrode frame and application thereof and flow battery |
| CN111261895B (en) * | 2018-11-30 | 2021-04-27 | 中国科学院大连化学物理研究所 | Flow battery electrode frame and application thereof and flow battery |
| CN109575479B (en) * | 2018-12-07 | 2021-04-20 | 金发科技股份有限公司 | PVC material and application thereof in positive and negative electrode frames of zinc-bromine flow battery |
| CN109575479A (en) * | 2018-12-07 | 2019-04-05 | 金发科技股份有限公司 | A kind of PVC material and its application in zinc-bromine flow battery positive and negative anodes frame |
| CN113036170A (en) * | 2019-12-09 | 2021-06-25 | 中国科学院大连化学物理研究所 | Zinc-bromine battery |
| CN113036170B (en) * | 2019-12-09 | 2022-02-11 | 中国科学院大连化学物理研究所 | Zinc-bromine battery |
| CN113889643A (en) * | 2020-07-03 | 2022-01-04 | 中国科学院大连化学物理研究所 | Preparation of integrated battery structure for all-vanadium redox flow battery, battery structure and application |
| CN113889638A (en) * | 2020-07-03 | 2022-01-04 | 中国科学院大连化学物理研究所 | Integrated battery structure for all-vanadium redox flow battery, preparation and application |
| CN113889638B (en) * | 2020-07-03 | 2023-10-13 | 中国科学院大连化学物理研究所 | Integrated battery structure for all-vanadium redox flow battery, and preparation and application thereof |
| CN113889643B (en) * | 2020-07-03 | 2023-10-20 | 中国科学院大连化学物理研究所 | Preparation of integrated battery structure for all-vanadium redox flow battery, battery structure and application |
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