A comprehensive analysis from basic to application of V-cathode in Zn-V static and flow batteries

Abstract

Electrochemical energy storage devices using zinc anodes and aqueous solutions have the characteristics of low cost, easy manufacture, intrinsic safety and so on. As an important part of modern aqueous battery, zinc batteries have attracted extensive attention in the academic community. Among them, vanadium-based materials have been widely discussed as cathode materials in static aqueous zinc-ion batteries due to their various valence states and rich resources. In addition, zinc vanadium flow batteries using vanadium electrolyte for energy storage have also gradually developed, which further expands the application of vanadium-based materials in aqueous zinc storage. In this review, the overall module of zinc vanadium battery (including static batteries and flow batteries) will be briefly reviewed, including the working mechanism, classification, structure, existing problems, and improvement strategies, so as to promote the further development of this field.