全钒氧化还原液流电池电解液的研究进展

Research progress in all vanadium redox flow battery electrolyte

全钒氧化还原液流电池(全钒液流电池)适用于大规模和分布式新能源接入、智能电网等领域。电解液的成本对全钒液流电池的推广与应用有重要影响。从降低成本和提高稳定性两个角度,综述近年来全钒液流电池电解液的研究进展。降低成本方面,当前工业化制备电解液主要是联合使用化学还原法和电解法,下一步主要是萃取法;从提高稳定性角度出发,介绍添加剂提高正极电解液和负极电解液温度稳定性,以及采用不同支持电解质在提高电解液浓度稳定性方面的研究进展;最后,从工业化生产角度,对全钒液流电池电解液的研究进行分析和总结。

All vanadium redox flow battery(vanadium flow battery)was suitable for large-scale and distributed new energy access,smart grid and other fields.The cost of electrolyte had an important impact on the promotion and application of vanadium flow battery.The research progress in vanadium battery electrolyte in recent years was reviewed from two aspects of reducing cost and improving stability.From the aspect of cost reduction,the current method of industrial preparation of electrolyte was mainly the combination of chemical reduction method and electrolysis method,the next step was mainly the extraction method.From the viewpoint of improving the stability,the research progress in improving the temperature stability of cathode electrolyte and anode electrolyte with additives,improving the concentration stability of electrolyte with different support electrolytes were introduced.Finally,the research on vanadium flow battery electrolyte was analyzed and summarized from the perspective of industrial production.