Positive active material for aqueous zinc ion secondary battery and aqueous zinc ion secondary battery

The invention provides a positive active material for an aqueous zinc ion secondary battery. The positive active material comprises lithium vanadium phosphate. The lithium vanadium phosphate LiVOPO4 is used as the positive active material of the aqueous zinc ion battery. The positive active material is beneficial for de-intercalation of divalent zinc ions, and the built aqueous zinc ion secondarybattery has a relatively high working voltage. 本发明提供了种水系锌离子电池用正极活性材料，包括磷酸氧钒锂。本发明以磷酸氧钒锂LiVOPO作为水系锌离子电池的正极活性材料，该正极活性材料有利于二价锌离子的脱嵌，所构建的水系锌离子二次电池具有较高的工作电压。