CN103413959A - Preparation method of electrolyte of vanadium battery - Google Patents
Preparation method of electrolyte of vanadium battery Download PDFInfo
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- CN103413959A CN103413959A CN2013103733194A CN201310373319A CN103413959A CN 103413959 A CN103413959 A CN 103413959A CN 2013103733194 A CN2013103733194 A CN 2013103733194A CN 201310373319 A CN201310373319 A CN 201310373319A CN 103413959 A CN103413959 A CN 103413959A
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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 invention discloses a preparation method of electrolyte of a vanadium battery. The method comprises the following steps: calcining vanadium pentoxide at the temperature of 700-1,125 DEG C; decomposing the vanadium pentoxide into vanadium tetraoxide and oxygen; condensing and crystallizing steam produced in the calcination process; dissolving a product obtained by condensing the calcinate and the steam in sulfuric acid solution; filtering solid impurities in the solution to obtain vanadyl sulfate solution; performing evaporative crystallization on the vanadyl sulfate solution; and preparing the electrolyte of the vanadium battery by using obtained crystals and analytically pure concentrated sulfuric acid solution.
Description
Technical field
The invention belongs to the battery manufacture technical field, be specifically related to a kind of compound method of electrolyte of vanadium redox battery.
Background technology
The vanadium cell full name is vanadium redox battery (Vanadium Redox Battery, is abbreviated as VRB), is that a kind of active material is and circulates liquid redox cell.Vanadium cell has special battery structure, but degree of depth high current density discharge; Charging rapidly; Specific energy is high; Cheap; Application is very wide: as can be used as mansion, airport, programme-controlled exchange station stand-by power supply; For submarine, electric automobile provide electric power and for peak load regulation network etc.The storage tank of vanadium cell pile and electrolyte separately, has fundamentally overcome the self-discharge phenomenon of conventional batteries.Power only depends on the pile size, and capacity only depends on electrolyte reserves and concentration, designs very flexible; When power one timing, increase stored energy capacitance, only need to increase electrolyte tank volume or raising electrolyte volume or concentration and get final product, and do not need to change the pile size; Can be by changing or add the purpose of the electrolyte realization " momentary charge " of charged state.Vanadium cell charge and discharge performance is good, can carry out powerful charging and discharging, can discharge and recharge number of times very big, and the life-span is many times in theory.
Existing method for preparing vanadium cell electrolyte is that vanadic oxide is added in sulfuric acid solution, heating for dissolving, cooling dilution adds the reducing agent reduction, after reacting completely, obtain vanadic sulfate solution, the heating evaporation drying, obtain blue vanadic sulfate powder, vanadic sulfate is dissolved in certain density sulfuric acid solution, makes electrolyte of vanadium redox battery; Reducing agent commonly used is oxalic acid acetic acid sulfurous acid sodium sulfite sulfur dioxide etc., and there is following problem in this technical scheme: reaction speed is slow, and while such as reducing agent, being oxalic acid sulfur dioxide, reaction speed is slow; Easily introduce impurity, while such as reducing agent, being sodium sulfite, can introduce sodium ion; Complex process, easily contaminated environment, be unfavorable for the manufacturing of vanadium cell,
Summary of the invention
One or more in addressing the above problem, the invention provides a kind of method for preparing electrolyte of vanadium redox battery, compared to the prior art, has reaction speed fast, and cost is low, and purity is high, is applicable to industrial production.
Technical scheme of the present invention is:
1) vanadic oxide slowly is warming up to 300 ℃--400 ℃, and keep 1-3 hour, then be warming up to 700 ℃-1125 ℃, and keep 2-5 hour, vanadic oxide is decomposed into to oxygen and vanadium tetraoxide; To the steam-condensation crystallization produced in heating process, reclaim solid condensation-crystallization thing.
2) after the product that product calcining obtained and steam-condensation crystallization obtain was fast cooling, the volume ratio that joins the concentrated sulfuric acid and water was 1: 1-3, temperature is to dissolve in the sulfuric acid solution of 70 ℃-100 ℃, obtains vanadic sulfate solution.
3) filter the vanadic sulfate solution removal solid impurity obtained, vanadic sulfate solution evaporative crystallization is obtained to the vanadic sulfate crystal.
4) the vanadic sulfate crystal is dissolved in to distilled water, with the analytically pure concentrated sulfuric acid, regulates the concentration of sulfuric acid in vanadic sulfate solution, make its applicable electrolyte of vanadium redox battery concentration requirement, make electrolyte of vanadium redox battery.
The invention has the beneficial effects as follows: reaction temperature is high, and reaction speed is fast, can enhance productivity; Do not use reducing agent, can not introduce other impurity, can make high-purity sulfuric acid vanadyl solution, high-purity electrolyte can improve the performance of vanadium cell; Simplified production stage, enhanced productivity.
Embodiment
A kind of electrolyte of vanadium redox battery compound method, vanadic oxide slowly is warming up to 300 ℃--400 ℃, and maintenance 1-3 hour, be warming up to again 700 ℃-1125 ℃, keep 2-5 hour, vanadic oxide is decomposed into to oxygen and vanadium tetraoxide, after the product that calcining is obtained is cooling fast, the volume ratio that joins the concentrated sulfuric acid and water is 1: 1-3, temperature is to dissolve in the sulfuric acid solution of 70 ℃-100 ℃, obtain vanadic sulfate solution, filter vanadic sulfate solution removal solid impurity, the vanadic sulfate solution obtained is inserted to crystallizing tank and carry out crystallization, obtain the vanadic sulfate crystal, the vanadic sulfate crystal is dissolved in to distilled water, with the analytically pure concentrated sulfuric acid, regulate the concentration 1-3mol/L of sulfuric acid in vanadic sulfate solution, make electrolyte of vanadium redox battery.
For better explanation the present invention, be convenient to understand technical scheme of the present invention, typical but non-limiting embodiment of the present invention is as follows:
Embodiment mono-
A kind of electrolyte of vanadium redox battery compound method, the vanadic oxide of 400g purity 98% slowly is warming up to 300 ℃, and kept 1 hour, be warming up to again 720 ℃, kept 2 hours, vanadic oxide is decomposed into to oxygen and vanadium tetraoxide, after the product that calcining is obtained is cooling fast, the volume ratio that joins the concentrated sulfuric acid and water is 1:1, temperature is to dissolve in the sulfuric acid solution of 80 ℃, obtain vanadic sulfate solution, filter vanadic sulfate solution removal solid impurity, the vanadic sulfate solution obtained is inserted to crystallizing tank and carry out crystallization, obtain the vanadic sulfate crystal, the vanadic sulfate crystal is dissolved in to distilled water, with the analytically pure concentrated sulfuric acid, regulate the concentration 3mol/L of sulfuric acid in vanadic sulfate solution, make electrolyte of vanadium redox battery.
Embodiment bis-
A kind of electrolyte of vanadium redox battery compound method, the vanadic oxide of 1000g purity 98% slowly is warming up to 400 ℃, and kept 1 hour, be warming up to again 800 ℃, kept 2 hours, vanadic oxide is decomposed into to oxygen and vanadium tetraoxide, after the product that calcining is obtained is cooling fast, the volume ratio that joins the concentrated sulfuric acid and water is 1:2, temperature is to dissolve in the sulfuric acid solution of 90 ℃, obtain vanadic sulfate solution, filter vanadic sulfate solution removal solid impurity, the vanadic sulfate solution obtained is inserted to crystallizing tank and carry out crystallization, obtain the vanadic sulfate crystal, the vanadic sulfate crystal is dissolved in to distilled water, with the analytically pure concentrated sulfuric acid, regulate the concentration 2mol/L of sulfuric acid in vanadic sulfate solution, make electrolyte of vanadium redox battery.
Claims (1)
1. electrolyte of vanadium redox battery compound method is characterized in that:
Vanadic oxide slowly is warming up to 300 ℃--400 ℃, and keep 1-3 hour, then be warming up to 700 ℃-1125 ℃, and keep 2-5 hour, vanadic oxide is decomposed into to oxygen and vanadium tetraoxide; To the steam-condensation crystallization produced in heating process, reclaim solid condensation-crystallization thing
The product vitriolization solution that the product that heating is obtained and steam-condensation crystallization obtain, the solid impurity in filtering solution, obtain vanadic sulfate solution;
Vanadic sulfate solution is carried out to evaporative crystallization, with the crystal obtained and analytically pure concentrated sulfuric acid solution preparation electrolyte of vanadium redox battery.
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| CN2013103733194A CN103413959A (en) | 2013-08-22 | 2013-08-22 | Preparation method of electrolyte of vanadium battery |
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| CN2013103733194A CN103413959A (en) | 2013-08-22 | 2013-08-22 | Preparation method of electrolyte of vanadium battery |
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| CN103413959A true CN103413959A (en) | 2013-11-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109273786A (en) * | 2018-10-30 | 2019-01-25 | 成都先进金属材料产业技术研究院有限公司 | Utilize the method for sulfuric acid system vanadium cell failure anode electrolyte regeneration V electrolyte |
| JP2022503573A (en) * | 2018-10-23 | 2022-01-12 | ロッキード マーティン エナジー，エルエルシー | Methods and equipment for removing impurities from electrolytes |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090286154A1 (en) * | 2005-10-24 | 2009-11-19 | Highveld Steel And Vanadium Corporation Limited | Process for the Preparation of an Electrolyte |
| CN102951680A (en) * | 2011-08-25 | 2013-03-06 | 攀钢集团钢铁钒钛股份有限公司 | Preparation method of vanadyl sulfate |
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2013
- 2013-08-22 CN CN2013103733194A patent/CN103413959A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090286154A1 (en) * | 2005-10-24 | 2009-11-19 | Highveld Steel And Vanadium Corporation Limited | Process for the Preparation of an Electrolyte |
| CN102951680A (en) * | 2011-08-25 | 2013-03-06 | 攀钢集团钢铁钒钛股份有限公司 | Preparation method of vanadyl sulfate |
Non-Patent Citations (1)
| Title |
|---|
| 张天胜等: "《化工厂废弃物回收利用工艺实例》", 31 October 2010, article "石油炼制工业废弃物资源化综合利用", pages: 155 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022503573A (en) * | 2018-10-23 | 2022-01-12 | ロッキード マーティン エナジー，エルエルシー | Methods and equipment for removing impurities from electrolytes |
| US12074353B2 (en) | 2018-10-23 | 2024-08-27 | Lockheed Martin Energy, Llc | Methods and devices for removing impurities from electrolytes |
| CN109273786A (en) * | 2018-10-30 | 2019-01-25 | 成都先进金属材料产业技术研究院有限公司 | Utilize the method for sulfuric acid system vanadium cell failure anode electrolyte regeneration V electrolyte |
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Application publication date: 20131127 |