Research Progress on Highly Efficient and Stable Vanadium Redox Flow Battery Electrolytes
WANG Xijun1,†, LIU Ziyang2,3,†, LI Lin3, LI Chenlei1, HAN Aijuan2, YANG Miaosen3,*, LIU Junfeng2,*
1 State Grid Jibei Electric Power Research Institute (North China Electric Power Research Institute Co., Ltd.), Beijing 100049, China 2 College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China 3 School of Chemical Engineering, Northeast Electric Power University, Jilin 132001, Jilin, China
Abstract: The vanadium redox flow battery (VRFB) is a large-scale energy storage technology that boasts high safety, an extended cycle life, and robust long-duration energy storage capabilities. This review centers on the key technical indicators of the electrolyte— the core component of the VRFB — and delivers a systematic overview of research advances in its supporting electrolyte, as well as two common categories of additives:stabilizers and kinetic enhancers. Meanwhile, combined with the demand for cost control, the preparation methods of the electrolyte are introduced. The paper′s primary objective is to furnish theoretical support and technical references for the development of electrolytes that exhibit high vanadium ion concentration, a broad operating temperature range, superior electrochemical activity, and cost-effectiveness.
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