CN107768702A - The minimizing technology of copper ion in a kind of V electrolyte - Google Patents
The minimizing technology of copper ion in a kind of V electrolyte Download PDFInfo
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- CN107768702A CN107768702A CN201711022493.9A CN201711022493A CN107768702A CN 107768702 A CN107768702 A CN 107768702A CN 201711022493 A CN201711022493 A CN 201711022493A CN 107768702 A CN107768702 A CN 107768702A
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- electrolyte
- copper ion
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- 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
- H01M8/184—Regeneration by electrochemical means
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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 belongs to battery material field, and in particular to the minimizing technology of copper ion in a kind of V electrolyte.The technical problems to be solved by the invention are to provide a kind of minimizing technology of copper ion in V electrolyte, comprise the following steps：Decoppering agent is added in the V electrolyte of cupric, fully after reaction, filtering, obtains pure V electrolyte；Described decoppering agent is at least one of oxalic acid or oxalates.The inventive method can effectively remove the copper ion in V electrolyte, so as to obtain the stable V electrolyte of character.
Description
Technical field
The invention belongs to battery material field, and in particular to the minimizing technology of copper ion in a kind of V electrolyte.
Background technology
In recent years, regenerative resource was widely developed, but by regenerative resource is unstable, intermittent spy
Property limitation, regenerative resource is difficult to effectively utilize.In order to more effectively utilize regenerative resource, people are to large-scale energy storage
The demand of device is more and more stronger.Vanadium cell is because its power output and capacity are separate, and big with power and capacity, circulation makes
With long lifespan, the advantages that energy efficiency is high, and depth charge-discharge performance is good, and security performance is high, it is considered to be most application prospect it
One extensive energy-storage battery, has been to be concerned by more and more people.
Carrier of the V electrolyte as vanadium cell energy storage, is one of critical material of vanadium cell.Run in vanadium cell
During, because V electrolyte is likely to be exposed the component of cupric so that copper corrodes in acid medium, and copper ion is big
Amount is incorporated in electrolyte.In battery During Process of Long-term Operation, copper ion can influence the stable operation of vanadium cell.
At present, remove copper ion in electrolyte of vanadium redox battery and copper ion is mainly reduced to by cuprous ion using reducing agent, then
Precipitating reagent is added, forms cuprous sediment.This method needs copper ion being reduced to cuprous ion, adds technological process,
Process is difficult to control.
The content of the invention
The present invention provides a kind of minimizing technology of copper ion in V electrolyte.This method comprises the following steps：It is electrolysed in vanadium
Decoppering agent is added in liquid, fully after reaction, filtering, obtains pure V electrolyte；Described decoppering agent is oxalic acid or oxalates
At least one of.
Wherein, in above-mentioned V electrolyte in the minimizing technology of copper ion, the vanadium concentration of the V electrolyte for 0.5~
5.0mol/L。
Preferably, in above-mentioned V electrolyte in the minimizing technology of copper ion, the oxalates is sodium oxalate, ammonium oxalate or grass
At least one of sour potassium.
Preferably, in above-mentioned V electrolyte in the minimizing technology of copper ion, the reaction temperature is 50~110 DEG C.
Preferably, in above-mentioned V electrolyte in the minimizing technology of copper ion, the reaction time is 0.5~24h.More preferably
For 1~5h.
Preferably, in above-mentioned V electrolyte in the minimizing technology of copper ion, pending amount of copper is with adding in the V electrolyte
The mol ratio of the decoppering agent entered is 1 ︰ 1~3.
The inventive method is raw material using cupric waste electrolyte, suitable decoppering agent is selected, using the precipitation method, technological process
Simply, operation is easy, can effectively reduce the content of copper ion in solution, copper removal rate reaches more than 80%.The inventive method consumes
Low, the energy-conserving and environment-protective of energy, the V electrolyte character after processing are stable.
Embodiment
Embodiment 1
To the V electrolyte that known vanadium ion concentration is 2.5mol/L cuprics, it is 1.5g/L to determine its content of copper ion.Take
1000ml V electrolytes, add decoppering agent oxalic acid 2.2g, and reaction temperature is 85 DEG C, after the completion of reaction, filtering precipitate.Pass through
Content of copper ion is 100mg/L in ICP measure filtrates, and copper removal rate is 93.33%.
Embodiment 2
To the V electrolyte that known vanadium ion concentration is 4.0mol/L cuprics, it is 1.0g/L to determine its content of copper ion.Take
1000ml V electrolytes, add decoppering agent sodium oxalate 5.0g, and reaction temperature is 75 DEG C, after the completion of reaction, filtering precipitate.It is logical
It is 70mg/L to cross content of copper ion in ICP measure filtrates, and copper removal rate is 93.0%.
Embodiment 3
To the V electrolyte that known vanadium ion concentration is 2.0mol/L cuprics, it is 2.4g/L to determine its content of copper ion.Take
1000ml V electrolytes, add decoppering agent sodium oxalate 10.0g, and reaction temperature is 90 DEG C, after the completion of reaction, filtering precipitate.
It is 120mg/L to determine content of copper ion in filtrate by ICP, and copper removal rate is 95.0%.
Embodiment 4
To the V electrolyte that known vanadium ion concentration is 1.0mol/L cuprics, it is 800mg/L to determine its content of copper ion.Take
1000ml V electrolytes, add decoppering agent ammonium oxalate 2.4g, and reaction temperature is 70 DEG C, after the completion of reaction, filtering precipitate.It is logical
It is 60mg/L to cross content of copper ion in ICP measure filtrates, and copper removal rate is 92.5%.
Embodiment 5
To the V electrolyte that known vanadium ion concentration is 1.5mol/L cuprics, it is 500mg/L to determine its content of copper ion.Take
1000ml V electrolytes, decoppering agent sodium oxalate 1.0g and ammonium oxalate 1.0g being added, reaction temperature is 85 DEG C, after the completion of reaction,
Filtering precipitate.It is 50mg/L to determine content of copper ion in filtrate by ICP, and copper removal rate is 90.0%.
Embodiment 6
To the V electrolyte that known vanadium ion concentration is 1.7mol/L cuprics, it is 200mg/L to determine its content of copper ion.Take
1000ml V electrolytes, add decoppering agent sodium oxalate 0.5g and oxalic acid 0.2g, and reaction temperature is 80 DEG C, after the completion of reaction, mistake
Filter sediment.It is 35mg/L to determine content of copper ion in filtrate by ICP, and copper removal rate is 82.5%.
Claims (7)
1. the minimizing technology of copper ion in V electrolyte, it is characterised in that：Comprise the following steps：Copper removal is added in V electrolyte
After agent, fully reaction, filtering, pure V electrolyte is obtained；Described decoppering agent is at least one of oxalic acid or oxalates.
2. the minimizing technology of copper ion in V electrolyte according to claim 1, it is characterised in that：The V electrolyte
Vanadium concentration is 0.5~5.0mol/L.
3. the minimizing technology of copper ion in V electrolyte according to claim 1 or 2, it is characterised in that：The oxalates
For at least one of sodium oxalate, ammonium oxalate or potassium oxalate.
4. the minimizing technology of copper ion in the V electrolyte according to any one of claims 1 to 3, it is characterised in that：It is described
Reaction temperature is 50~110 DEG C.
5. the minimizing technology of copper ion in the V electrolyte according to any one of claims 1 to 3, it is characterised in that：It is described
Reaction time is 0.5~24h.
6. the minimizing technology of copper ion in V electrolyte according to claim 5, it is characterised in that：The reaction time is
1~5h.
7. the minimizing technology of copper ion in the V electrolyte according to any one of claim 1~6, it is characterised in that：It is described
The mol ratio of decoppering agent of the pending amount of copper with adding is 1 ︰ 1~3 in V electrolyte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711022493.9A CN107768702A (en) | 2017-10-26 | 2017-10-26 | The minimizing technology of copper ion in a kind of V electrolyte |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711022493.9A CN107768702A (en) | 2017-10-26 | 2017-10-26 | The minimizing technology of copper ion in a kind of V electrolyte |
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| Publication Number | Publication Date |
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| CN107768702A true CN107768702A (en) | 2018-03-06 |
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| CN201711022493.9A Pending CN107768702A (en) | 2017-10-26 | 2017-10-26 | The minimizing technology of copper ion in a kind of V electrolyte |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108666604A (en) * | 2018-03-21 | 2018-10-16 | 广东省稀有金属研究所 | A kind of vanadic sulfate electrolyte copper-removing method of all-vanadium flow battery |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102983340A (en) * | 2012-11-21 | 2013-03-20 | 中国科学院金属研究所 | Method for removing copper ions from copper-containing vanadium liquid |
| CN103589475A (en) * | 2013-11-13 | 2014-02-19 | 天津中材工程研究中心有限公司 | Production method of derived fuel of CCA (chromated copper arsenate) wood hazardous waste |
| CN106521555A (en) * | 2016-11-02 | 2017-03-22 | 中南大学 | Selective iron removal method for antimony electrolyte |
-
2017
- 2017-10-26 CN CN201711022493.9A patent/CN107768702A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102983340A (en) * | 2012-11-21 | 2013-03-20 | 中国科学院金属研究所 | Method for removing copper ions from copper-containing vanadium liquid |
| CN103589475A (en) * | 2013-11-13 | 2014-02-19 | 天津中材工程研究中心有限公司 | Production method of derived fuel of CCA (chromated copper arsenate) wood hazardous waste |
| CN106521555A (en) * | 2016-11-02 | 2017-03-22 | 中南大学 | Selective iron removal method for antimony electrolyte |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108666604A (en) * | 2018-03-21 | 2018-10-16 | 广东省稀有金属研究所 | A kind of vanadic sulfate electrolyte copper-removing method of all-vanadium flow battery |
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Application publication date: 20180306 |