CN201528013U - Vanadium-chromium dual-liquid flow battery - Google Patents
Vanadium-chromium dual-liquid flow battery Download PDFInfo
- Publication number
- CN201528013U CN201528013U CN2009202312549U CN200920231254U CN201528013U CN 201528013 U CN201528013 U CN 201528013U CN 2009202312549 U CN2009202312549 U CN 2009202312549U CN 200920231254 U CN200920231254 U CN 200920231254U CN 201528013 U CN201528013 U CN 201528013U
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- electrolyte
- vanadium
- flow battery
- anodal
- negative pole
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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
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Abstract
The utility model relates to a vanadium-chromium dual-liquid flow battery which consists of a stack formed by connecting a plurality of single batteries in series, positive electrode electrolyte, negative electrode electrolyte, a storage tank, a liquid pump and a liquid conveying pipe, wherein the positive electrode electrolyte of the battery monomers is sulfuric acid solution of VO2+; and the negative electrode electrolyte is hydrated sulfuric acid solution of Cr3+. The positive electrode electrolyte and the negative electrode electrolyte circulate and flow constantly under the conveying of the liquid pump during the charging and discharging processes. When in charging, the VO<2+> ions are oxidized to VO2<+> ions, and the Cr<3+> ions are reduced to the Cr<2+> ions, and the situation is contrary when in discharging. The dual-liquid flow battery has the advantages of easy scalization, long cycle life, simple structure, relatively cheap materials, high energy density, power density and energy utilization efficiency and the like; compared with an all-vanadium liquid flow battery, the energy density is improved by 10%, and the cost is reduced by 20%. The vanadium-chromium dual-liquid flow battery is best applicable to being used as a large-scale electrical energy storage device in wind energy and solar power generation systems and can be extensively applied in power, traffic and other industries.
Description
Technical field
The utility model relates to a kind of principle and preparation method of novel vanadium-chromium double flow battery, belongs to chemical field, can be widely used in industries such as the extensive energy storage of regenerative resource such as wind energy, solar energy etc. and electric power, traffic.
Background technology
Electric energy is indispensable secondary energy sources in modern society human lives, the production.Along with socioeconomic fast development, electricity needs is more and more higher.Electricity needs differs greatly round the clock, but the construction scale in power plant must be complementary with the peak electricity consumption, and investment is big, utilance is lower.And along with the continuous exhaustion of fossil energy, the development and use of regenerative resources such as wind energy, solar energy are more and more wider.In order to satisfy the electricity consumption needs of people's production and construction and life, reduce the construction scale and the investment in power plant, raise the efficiency, and the randomness that overcomes regenerative resources such as wind-powered electricity generation, solar energy, guarantee stable power-supplying, the energy storage technology that exploiting economy is feasible makes generating be significant with electricity consumption is relatively independent.
Liquid accumulator cell claims liquid stream redox cell again, can be called for short flow battery, is a kind of novel big capacity electrochemical energy storage device.It is different from the battery of common use solid material electrode or gas electrode, be that oxysome with metal ion is as positive active material, the reduction of metal ion body is as negative electrode active material, and they be dissolved in respectively in the electrolyte store, during battery discharge by external reservoir respectively to the cathode chamber and the generating of anode chamber feed flow of battery.Because the electrochemical reaction of battery does not comprise solid-state process, and active material is the electrolyte solution that flows, so the reaction speed of battery compares other conventional storage battery height with efficiency for charge-discharge, and can the scale electric power storage.Under the surging situation of the cry that extensively utilizes regenerative resource, can predict the period that flow battery will welcome a fast development.
Double flow battery has both positive and negative polarity electrolyte separately, and the characteristics of each self-loopa are a kind of high-performance storage batterys, have capacity height, the scope of application wide, recycle advantages such as the life-span is long.At present, double flow battery been has has been researched and developed battery systems such as Fe/Cr, full vanadium, sodium polysulfide/Br2 and Quan Ge.The Fe/Cr flow battery is abandoned gradually because energy density is low.The energy density of full chrome liquor galvanic battery is 6 times of Fe/Cr flow battery, but its anodal electrolyte is the chromium ion (Cr of high price
6+), its toxicity is very big.Studying and use more at present is all-vanadium flow battery, but because the price of vanadium is very high, be difficult to a large amount of uses so that the cost of all-vanadium flow battery is higher.
Summary of the invention
The purpose of this utility model is in order to overcome the weak point of above-mentioned existing flow battery, to design a kind of having extended cycle life, and material price is relatively cheap, and production cost is lower, the vanadium-chromium double flow battery that energy density and power density are high.
Vanadium-chromium double flow battery of the present utility model, mainly be on the basis of existing double flow battery, to improve to form, its structure comprises mainly by positive electrode, anodal electrolyte, negative electrode, the pile that the multiple batteries monomer that negative pole electrolyte and amberplex are formed is unified into, and anodal electrolysis liquid storage tank, anodal electrolyte liquor pump, negative pole electrolysis liquid storage tank and negative pole electrolyte liquor pump, anodal used for electrolyte woven hose in the pile and anodal electrolysis liquid storage tank and anodal electrolyte liquor pump are linked to be the loop, negative pole used for electrolyte woven hose in the pile and negative pole electrolysis liquid storage tank and negative pole electrolyte liquor pump are linked to be the loop, and its key is that described anodal electrolyte is VO
2+The sulfuric acid solution of vanadium ion, negative pole electrolyte are Cr
3+The hydration sulfuric acid solution of chromium ion.
The VO of described anodal electrolyte
2+The sulfuric acid solution of vanadium ion can select for use vanadic sulfate to be dissolved in the VO that is mixed with 2.0mol/L in the concentrated sulfuric acid solution of 18.5mol/L
2+Sulfuric acid solution.
The Cr of described negative pole electrolyte
3+The hydration sulfuric acid solution, can select for use chromium sulfate to be dissolved in the Cr that is made into 2.0mol/L in the sulfuric acid solution of 3.0mol/L
3+The hydration sulfuric acid solution.
Described amberplex is selected Nafion-117 type amberplex for use.
Vanadium-chromium double flow battery of the present utility model is owing to select VO for use
2+The sulfuric acid solution of vanadium ion is anodal electrolyte, selects Cr for use
3+The hydration sulfuric acid solution be negative pole electrolyte, so the anodal electrolyte that can both avoid full chrome liquor galvanic battery is the chromium ion (Cr of high price
6+) toxicity problem, improve 10% than all-vanadium flow battery energy density again, cost descends 20%.Have easy scale, have extended cycle life; simple in structure; material price is relatively cheap; characteristics such as energy density, power density and energy utilization efficiency height; be suitable for storing as large-scale electric energy and efficient converting apparatus use, can be widely used in industries such as electric power, traffic at wind energy, solar power system.
Description of drawings
Accompanying drawing is a kind of structural representation of vanadium-chromium double flow battery of the present utility model.
Embodiment
Referring to accompanying drawing, 1 is anodal electrolysis liquid storage tank among the figure, and 2 is negative pole electrolysis liquid storage tank; 3 is anodal electrolyte; 4 is negative pole electrolyte; 5 is positive electrode; 6 is negative electrode; 7 is amberplex; 8 is anodal electrolyte liquor pump; 9 is negative pole electrolyte liquor pump; 10 is pile; 11 is power supply or load, and 12 is woven hose.
Vanadium-chromium double flow battery of the present utility model, its structure is mainly by positive electrode 5, anodal electrolyte 3, negative electrode 6, the pile 8 that the multiple batteries monomer that negative pole electrolyte 4 and amberplex 7 are formed is unified into, and anodal electrolysis liquid storage tank 1, anodal electrolyte liquor pump 8, negative pole electrolysis liquid storage tank 2 and negative pole electrolyte liquor pump 9, anodal electrolyte 3 usefulness woven hoses 12 in the pile 8 are linked to be the loop with anodal electrolysis liquid storage tank 1 and anodal electrolyte liquor pump 8, negative pole electrolyte 4 usefulness woven hoses 12 in the pile 8 are linked to be the loop with negative pole electrolysis liquid storage tank 2 and negative pole electrolyte liquor pump 9, and described anodal electrolyte 3 is VO
2+The sulfuric acid solution of vanadium ion, negative pole electrolyte 4 is Cr
3+The hydration sulfuric acid solution of chromium ion.During charging, power supply or load 11 connect charge power supply, and during discharge, power supply or load 11 connect load, and in the charge and discharge process, positive and negative electrode electrolyte constantly circulates under the conveying of liquor pump.
The VO of described anodal electrolyte 3
2+The sulfuric acid solution of vanadium ion can select for use vanadic sulfate to be dissolved in the VO that is mixed with 2.0mol/L in the concentrated sulfuric acid solution of 18.5mol/L
2+Sulfuric acid solution.
The Cr of described negative pole electrolyte 4
3+The hydration sulfuric acid solution, can select for use chromium sulfate to be dissolved in the Cr that is made into 2.0mol/L in the sulfuric acid solution of 3.0mol/L
3+The hydration sulfuric acid solution.
The VO of above-mentioned positive electrolyte
2+The Cr of the sulfuric acid solution of vanadium ion and negative pole electrolyte
3+The hydration sulfuric acid solution, also the sulfuric acid of available other concentration is formulated, the concentration of the positive and negative electrolyte of gained is high, can make battery capacity more greatly, concentration is hanged down, and can make battery capacity littler.
The positive and negative electrode of battery cell is inert electrodes such as carbon element class.In order to prevent that electrolyte from mixing in battery cell, adopt amberplex to separate between positive electrode in the battery cell and the negative electrode.Described amberplex can be selected Nafion-117 type amberplex for use.
Vanadium-chromium double flow battery of the present utility model is with VO
2+Make positive active material, Cr
3+Make negative electrode active material, its electrode reaction is as follows:
Anodal reaction:
E
0＝1.00V
Negative reaction:
E
0＝-0.41V
Its operation principle is to utilize redox reaction between the different valence state vanadium chromium ion to realize the conversion of energy, and the active material of positive and negative electrode all is dissolved in the solution, and redox reaction occurs on the inertia collector.When electrolyte flow, can charge and discharge.During charging, VO
2+Ion-oxygen changes into VO
2 +Ion, and Cr
3+Ion is reduced into Cr
2+Ion, otherwise during discharge.The standard electric potential difference of the positive and negative electrode of battery cell is 1.41V.
Vanadium-chromium double flow battery of the present utility model is in charge and discharge process, electrolyte constantly is conveyed in the battery cell by liquor pump, because electrolyte flow has increased the material Transfer speed in the electrode interface, and liquid phase reactor only takes place, the complicated solid phase that common batteries does not take place changes, and has eliminated electrochemistry and concentration polarization.Rated power depends on battery pile, and amount of capacity depends on electrolyte content, and amount that can be by increasing electrolyte and improve electrolytical concentration reaches the purpose that increases battery capacity.
Vanadium-chromium double flow battery of the present utility model, during work, positive and negative electrode electrolyte 3,4 constantly is transported to electrolyte in the pile 10 from positive and negative electrode electrolyte storage tank 1,2 respectively by woven hose 12 under the conveying of positive and negative electrode electrolyte liquor pump 8,9, finish after the electrochemical reaction, positive and negative electrode electrolyte 3,4 is got back to respectively again in the positive and negative electrode electrolyte storage tank 1,2.
Claims (2)
1. vanadium-chromium double flow battery, comprise mainly by positive electrode, anodal electrolyte, negative electrode, the pile that the multiple batteries monomer that negative pole electrolyte and amberplex are formed is unified into, and anodal electrolysis liquid storage tank, anodal electrolyte liquor pump, negative pole electrolysis liquid storage tank and negative pole electrolyte liquor pump, anodal used for electrolyte woven hose in the pile and anodal electrolysis liquid storage tank and anodal electrolyte liquor pump are linked to be the loop, negative pole used for electrolyte woven hose in the pile and negative pole electrolysis liquid storage tank and negative pole electrolyte liquor pump are linked to be the loop, it is characterized in that described anodal electrolyte is VO
2+The sulfuric acid solution of vanadium ion, negative pole electrolyte are Cr
3+The hydration sulfuric acid solution of chromium ion.
2. vanadium-chromium double flow battery according to claim 1 is characterized in that described amberplex selects Nafion-117 type amberplex for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202312549U CN201528013U (en) | 2009-09-04 | 2009-09-04 | Vanadium-chromium dual-liquid flow battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202312549U CN201528013U (en) | 2009-09-04 | 2009-09-04 | Vanadium-chromium dual-liquid flow battery |
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| Publication Number | Publication Date |
|---|---|
| CN201528013U true CN201528013U (en) | 2010-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202312549U Expired - Lifetime CN201528013U (en) | 2009-09-04 | 2009-09-04 | Vanadium-chromium dual-liquid flow battery |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101651219B (en) * | 2009-09-04 | 2011-05-04 | 江苏省信息化研究中心 | Vanadium-chromium double flow battery |
| CN103181014A (en) * | 2010-08-13 | 2013-06-26 | 斯奎勒尔控股有限公司 | Redox flow battery system employing different charge and discharge cells |
| CN105042686A (en) * | 2015-06-07 | 2015-11-11 | 深圳市沃森空调技术有限公司 | Variable frequency air conditioner for generating electricity by saline water |
| CN115020756A (en) * | 2022-06-13 | 2022-09-06 | 燕山大学 | Zinc-bromine/iodine double flow battery |
-
2009
- 2009-09-04 CN CN2009202312549U patent/CN201528013U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101651219B (en) * | 2009-09-04 | 2011-05-04 | 江苏省信息化研究中心 | Vanadium-chromium double flow battery |
| CN103181014A (en) * | 2010-08-13 | 2013-06-26 | 斯奎勒尔控股有限公司 | Redox flow battery system employing different charge and discharge cells |
| CN105042686A (en) * | 2015-06-07 | 2015-11-11 | 深圳市沃森空调技术有限公司 | Variable frequency air conditioner for generating electricity by saline water |
| CN115020756A (en) * | 2022-06-13 | 2022-09-06 | 燕山大学 | Zinc-bromine/iodine double flow battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100714 Effective date of abandoning: 20090904 |