WO2015007204A1 - 一种全钒液流电池及其运行方式 - Google Patents
一种全钒液流电池及其运行方式 Download PDFInfo
- Publication number
- WO2015007204A1 WO2015007204A1 PCT/CN2014/082235 CN2014082235W WO2015007204A1 WO 2015007204 A1 WO2015007204 A1 WO 2015007204A1 CN 2014082235 W CN2014082235 W CN 2014082235W WO 2015007204 A1 WO2015007204 A1 WO 2015007204A1
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- WO
- WIPO (PCT)
- Prior art keywords
- electrolyte
- vanadium
- positive
- flow battery
- negative electrode
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- H01M8/184—Regeneration by electrochemical means
- H01M8/188—Regeneration by electrochemical means by recharging of redox couples containing fluids; Redox flow type batteries
-
- 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
Definitions
- the invention relates to an all-vanadium redox flow battery and an operation mode thereof, and belongs to the field of liquid flow batteries.
- an all-vanadium flow battery has advantages such as long cycle life, easy scale, quick response, free location, and the like, and has been in many large-scale solar energy storage. It has been successfully applied in wind power storage equipment and large emergency power supply systems and power system peak clipping and valley filling.
- the electrolyte is the key material and energy storage material of the vanadium battery. During the charging process, the electrolyte is driven by the left and right magnetic pump, and the positive and negative solution reacts through the ion conductive membrane as follows:
- V 5+ has a higher concentration (>1M).
- the positive solution is prone to precipitate V 2 O.
- the precipitation will block the gap structure of the electrode. , causing system paralysis and increasing battery maintenance costs. If cooling measures are taken, the cost and energy consumption of supporting facilities will not be underestimated.
- the electrolyte stability additives studied at home and abroad mainly include:
- alkali metal sulfate sodium sulfate, potassium sulfate, magnesium sulfate, etc.
- alkali metal salts there have been many reports on alkali metal salts in the literature, but it is necessary to add a certain amount (>2%, m/v) to have an effect, resulting in a solution.
- concentration of other metal ions is increasing, and there is no support for the application of stable charge and discharge data in the test level.
- Phosphoric acid and its salts have been reported as stabilizers for vanadium electrolytes, but the research on the low-temperature stability of the anodes after addition is still blank, and the storage stability test data under long-term extreme conditions have not been reported.
- European invention patent EP1143546 discloses an operation mode of an all-vanadium redox flow battery, which mentions that by adding a communication line to the upper end of the positive and negative electrode solution storage tank, the short-term capacity drop of the system caused by the mutual migration of the positive and negative electrode vanadium solutions is alleviated, but It does not avoid the irreversible capacity drop caused by the occurrence of hydrogen evolution side reactions, which has a limited improvement in the large attenuation of the discharge capacity caused by long-term operation of the system. Summary of the invention
- An all-vanadium redox flow battery comprising a positive electrode electrolyte and a negative electrode electrolyte, wherein the ratio of total vanadium in the positive electrode electrolyte to the negative electrode electrolyte is always positive: the negative electrode is 1: 1.5 ⁇ 1: 1.2, and the positive electrode electrolyte
- the negative electrode electrolyte contains additives, and the concentration of the additive is 0.01 mol/L to 0.5 mol/L.
- the additive is at least one selected from the group consisting of sulfuric acid, sulfate, phosphoric acid, phosphate, pyrophosphate, and polyphosphate.
- the total vanadium content of the electrolyte is the concentration of vanadium ions in the electrolyte X electrolyte volume; the ratio of total vanadium in the positive electrolyte and the negative electrolyte refers to the ratio of the total vanadium content of the positive electrolyte to the total vanadium of the negative electrolyte.
- the concentration of vanadium ions in the positive electrode electrolyte is the same as the concentration of vanadium ions in the negative electrode electrolyte; the vanadium ion concentration includes a sum of concentrations of vanadium ions of various valence states present in the electrolyte.
- the positive electrode electrolyte and the negative electrode electrolyte used in the all-vanadium redox flow battery are respectively stored in the positive and negative electrolyte storage tanks, and the total vanadium ratio of the positive electrode electrolyte and the negative electrode electrolyte is equal.
- the invention reduces the ratio of the V 2+ of the negative electrode solution to the total V n+ vanadium content of the negative electrode during the operation of the battery (SOC state), that is, the V 2+ in the negative electrode electrolyte is reduced by making the total vanadium content of the negative electrode larger than a certain ratio of the positive electrode. concentration.
- the volume ratio of the positive and negative electrodes can be controlled, and the volume ratio of the positive and negative electrolytes can be controlled during operation to minimize the hydrogen evolution reaction of the negative electrode to maintain the lower capacity decay rate of the system.
- the ratio of the total amount of vanadium in the negative electrode electrolyte can be achieved by transferring the positive electrode electrolyte into the negative electrode electrolyte, and the volume of the transferred electrolyte is determined by the positive and negative electrode vanadium ion concentrations and the volume of the positive and negative electrode solutions measured in real time.
- the V 5+ ratio of the positive electrode solution can reach 85% or more at the completion of charging (the normal state is about 60%).
- the concentration of 5+ is too high or the temperature exceeds 45 °C. Therefore, while controlling the total vanadium ratio of the system, an additive is added to the positive electrode electrolyte and the negative electrode electrolyte to suppress the precipitation of V 3+ in the negative electrode solution at a low temperature, and to suppress the V 5+ in the positive electrode solution at a high temperature. Precipitating to achieve an additive to stabilize the entire system.
- the additive of the all-vanadium redox flow battery of the present invention is at least one of sulfuric acid, sulfate, phosphoric acid, phosphate, pyrophosphate, polyphosphate, etc., wherein the cation is preferably Na+.
- the additive is preferably added to the positive electrode electrolyte and the negative electrode electrolyte according to the following addition method:
- Negative Electrolyte Solution Add an additive directly to the negative electrode electrolyte so that the concentration of the additive is 0.01 mol/L to 0.5 mol/L. After the addition, stir until all the solution is dissolved.
- Positive Electrode Solution The additive is first diluted with water (additive: water: 1:1 to 1:4), and the diluted additive is added to the positive electrode electrolyte.
- the additive can be added at any temperature between -15 ° C and 55 ° C.
- the polyphosphate is added in an amount of 0.01 mol/L to 0.5 mol/L based on the concentration of the monomer salt in the electrolyte.
- the ratio of total vanadium in the positive electrode electrolyte and the negative electrode electrolyte is always kept as positive electrode: the negative electrode is 1: 1.3 ⁇ 1: 1.2.
- the all-vanadium redox flow battery of the present invention is a phosphoric acid or a phosphate.
- the concentration of the additive of the all-vanadium redox flow battery of the present invention is preferably 0.04 to 0.20 mol/L, more preferably 0.20 mol/L.
- the ratio of total vanadium in the positive electrode electrolyte and the negative electrode electrolyte is always positive: the negative electrode is 1:1.5 ⁇ 1: 1.2, and the charge and discharge voltage of the all-vanadium flow battery is between 0.9V and 1.58V. .
- the ratio of total vanadium in the positive electrode electrolyte and the negative electrode electrolyte is always positive: the negative electrode is 1: 1.3 ⁇ 1: 1.2, and the charge and discharge voltage range of the all-vanadium flow battery is 0.9V ⁇ 1.58V. between.
- the operation mode of the all-vanadium redox flow battery system of the present invention is preferably the charge and discharge operating temperature of the all-vanadium redox flow battery The degree is 0 ° C ⁇ 5 (TC, stored at -20 ° C ⁇ 0 ° C under full charge).
- the above-mentioned flow battery with different total vanadium distribution modes of positive and negative electrodes avoids the system capacity attenuation, and the total discharge capacity (solution utilization rate) of the system is partially affected (depending on the total vanadium ratio, and the initial positive and negative electrodes) Compared with the equivalent solution, the total discharge capacity has a decrease of about 20%. Therefore, the operation mode of expanding the charge and discharge voltage range is adopted for this phenomenon, and the conventional charge and discharge voltage is 1.0V ⁇ 1.55V, which is extended to 0.9V ⁇ 1.58. V, thereby making up for the problem of a decrease in the utilization rate of the electrolyte due to the difference in the total vanadium content of the positive and negative electrodes.
- the invention proposes a novel operation mode of an all-vanadium redox flow battery, that is, different total vanadium content of the positive and negative electrodes, changing the voltage range, and using phosphoric acid additives.
- the method can maintain high energy density operation while greatly reducing the irreversible decay of the discharge energy caused by the hydrogen evolution side reaction.
- the operation mode is simple and easy, does not increase any cost, and greatly improves the utilization rate of the vanadium electrolyte, improves the battery performance, and is suitable for industrialization promotion.
- Example 1 is a graph showing the capacity change of a liquid flow battery of Example 2.
- Figure 2 is a graph showing the capacity change of the liquid flow battery of Example 3.
- Fig. 3 is a graph showing the capacity change of the flow battery of the fourth embodiment. detailed description
- Example 1 The stability of phosphoric acid and its salt additives was tested at high and low temperatures.
- Examples 2 to 4 The batteries used in the test were respectively Nafionl type l5 ion membranes, and the current density was
- V 5+ pentavalent vanadium electrolyte with vanadium ion concentration of 1.66M and 1.83M, sealed in 10mL plastic In the heart tube. Phosphoric acid was added in a concentration of 0.05 M to 0.3 M, and a control test was carried out. The solution was observed in a water bath at 40 ° C and 50 ° C. The test results are shown in Table 1 below.
- Example 3 The test parameters and test results are shown in the table below.
- the capacity change curve is shown in Figure 2:
- Example 4 The test parameters and test results are shown in the table below.
- the capacity change curve is shown in Figure 3: Item Total vanadium 6:7 ratio (positive/negative) Total vanadium ratio 1 : 1 (positive / negative) Solution temperature 40 °C
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- Fuel Cell (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
Abstract
Description
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Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2014292587A AU2014292587B2 (en) | 2013-07-17 | 2014-07-15 | All-vanadium redox flow battery and operation method thereof |
| JP2016526430A JP6231202B2 (ja) | 2013-07-17 | 2014-07-15 | 全バナジウムレドックスフロー電池及びその運転方法 |
| EP14825952.6A EP3024080B1 (en) | 2013-07-17 | 2014-07-15 | All-vanadium redox flow battery and operation method thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310301519.9A CN103367785B (zh) | 2013-07-17 | 2013-07-17 | 一种全钒液流电池及其运行方式 |
| CN201310301519.9 | 2013-07-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015007204A1 true WO2015007204A1 (zh) | 2015-01-22 |
Family
ID=49368652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2014/082235 Ceased WO2015007204A1 (zh) | 2013-07-17 | 2014-07-15 | 一种全钒液流电池及其运行方式 |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3024080B1 (zh) |
| JP (1) | JP6231202B2 (zh) |
| CN (1) | CN103367785B (zh) |
| AU (1) | AU2014292587B2 (zh) |
| WO (1) | WO2015007204A1 (zh) |
Cited By (4)
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|---|---|---|---|---|
| CN112447266A (zh) * | 2020-11-17 | 2021-03-05 | 武汉理工大学 | 一种考虑水分子迁移的全钒液流电池容量衰减建模方法 |
| CN114243073A (zh) * | 2021-12-09 | 2022-03-25 | 大连博融新材料有限公司 | 一种低温下稳定运行和存储的盐酸电解液、其制备方法及应用 |
| CN115064740A (zh) * | 2022-06-20 | 2022-09-16 | 大连融科储能装备有限公司 | 一种用于全钒液流储能系统实时监控可充放电量的方法 |
| US20240274852A1 (en) * | 2022-11-18 | 2024-08-15 | Suzhou Rongke Power Co., Ltd. | Electrolyte solutions and all vanadium redox flow batteries |
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| CN103367785B (zh) * | 2013-07-17 | 2016-06-22 | 大连融科储能技术发展有限公司 | 一种全钒液流电池及其运行方式 |
| KR101558079B1 (ko) | 2014-02-20 | 2015-10-06 | 오씨아이 주식회사 | 레독스 흐름 전지 |
| CN105762395B (zh) * | 2014-12-16 | 2018-06-19 | 中国科学院大连化学物理研究所 | 一种含有复合添加剂的全钒液流电池正极电解液及其应用 |
| EP3271964A4 (en) * | 2015-03-19 | 2018-10-17 | Primus Power Corporation | Flow battery electrolyte compositions containing a chelating agent and a metal plating enhancer |
| CN106299432A (zh) * | 2015-05-26 | 2017-01-04 | 中国科学院金属研究所 | 无机酸作为提高钒电解液浓度和稳定性添加剂的应用 |
| CN106997958A (zh) * | 2016-01-22 | 2017-08-01 | 大连融科储能技术发展有限公司 | 一种消除全钒液流电池电解液杂质影响的方法 |
| US11171350B2 (en) | 2016-03-14 | 2021-11-09 | Dalian Rongkepower Co., Ltd | Flow battery control method, flow battery control system and flow battery |
| CN107195932B (zh) * | 2016-03-14 | 2019-12-31 | 大连融科储能技术发展有限公司 | 液流电池容量稳定调控方法、系统及液流电池 |
| CN107204480B (zh) * | 2016-03-14 | 2020-04-24 | 大连融科储能技术发展有限公司 | 液流电池电解液参数确定方法及其系统、液流电池 |
| EP3435464A1 (de) * | 2017-07-28 | 2019-01-30 | Siemens Aktiengesellschaft | Redox-flow-batterie und verfahren zum betreiben einer redox-flow-batterie |
| AU2018316335B2 (en) * | 2017-08-08 | 2023-08-03 | Sumitomo Electric Industries, Ltd. | Method for Operating Redox Flow Battery |
| CN109546186B (zh) * | 2017-09-28 | 2021-11-09 | 大连融科储能技术发展有限公司 | 检测液流电池内电解液状态的soc检测装置、方法及具有soc检测装置的液流电池系统 |
| JP2021028866A (ja) * | 2017-12-19 | 2021-02-25 | 昭和電工株式会社 | 電解液およびレドックスフロー電池 |
| EP3799178A4 (en) * | 2018-05-21 | 2021-08-18 | Panasonic Intellectual Property Management Co., Ltd. | CIRCULATING BATTERY |
| CN112216856B (zh) * | 2020-09-17 | 2022-05-13 | 大连博融新材料有限公司 | 一种高温下稳定的盐酸电解液、其制备方法及应用 |
| CN114927720A (zh) * | 2020-12-21 | 2022-08-19 | 广东三水合肥工业大学研究院 | 一种用于全钒液流电池热量管理的控制模块 |
| DE102022113934A1 (de) | 2022-06-02 | 2023-12-07 | Voith Patent Gmbh | Verfahren zum Entfernen von V2O5 Ablagerungen in einem Redox-Flow-Batteriemodul |
| CN115566239B (zh) * | 2022-09-26 | 2024-09-17 | 成都先进金属材料产业技术研究院股份有限公司 | 一种含钒溶液制备钒电池电解液的方法及钒电池电解液 |
| CN120165001A (zh) * | 2023-12-14 | 2025-06-17 | 中国科学院大连化学物理研究所 | 一种全钒液流电池正极电解液和液流电池 |
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- 2014-07-15 JP JP2016526430A patent/JP6231202B2/ja active Active
- 2014-07-15 AU AU2014292587A patent/AU2014292587B2/en active Active
- 2014-07-15 WO PCT/CN2014/082235 patent/WO2015007204A1/zh not_active Ceased
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112447266A (zh) * | 2020-11-17 | 2021-03-05 | 武汉理工大学 | 一种考虑水分子迁移的全钒液流电池容量衰减建模方法 |
| CN112447266B (zh) * | 2020-11-17 | 2024-04-05 | 武汉理工大学 | 一种考虑水分子迁移的全钒液流电池容量衰减建模方法 |
| CN114243073A (zh) * | 2021-12-09 | 2022-03-25 | 大连博融新材料有限公司 | 一种低温下稳定运行和存储的盐酸电解液、其制备方法及应用 |
| CN114243073B (zh) * | 2021-12-09 | 2023-11-28 | 大连融科储能集团股份有限公司 | 一种低温下稳定运行和存储的盐酸电解液、其制备方法及应用 |
| CN115064740A (zh) * | 2022-06-20 | 2022-09-16 | 大连融科储能装备有限公司 | 一种用于全钒液流储能系统实时监控可充放电量的方法 |
| US20240274852A1 (en) * | 2022-11-18 | 2024-08-15 | Suzhou Rongke Power Co., Ltd. | Electrolyte solutions and all vanadium redox flow batteries |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3024080A4 (en) | 2017-03-22 |
| JP2016527678A (ja) | 2016-09-08 |
| CN103367785A (zh) | 2013-10-23 |
| EP3024080A1 (en) | 2016-05-25 |
| EP3024080B1 (en) | 2019-09-04 |
| JP6231202B2 (ja) | 2017-11-15 |
| AU2014292587B2 (en) | 2016-12-22 |
| CN103367785B (zh) | 2016-06-22 |
| AU2014292587A1 (en) | 2016-02-11 |
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