Aqueous zinc ion battery additive and battery electrolyte

The invention discloses an aqueous zinc ion battery additive and an electrolyte, the aqueous zinc ion battery additive is silver nitrate, and the electrolyte is an aqueous zinc ion electrolyte containing silver nitrate. The concentration of the additive is 0.001 mol/L to 0.1 mol/L. Compared with other electrolytes, the electrolyte provided by the invention has the advantages that the cycling stability of a zinc negative electrode is greatly improved when the electrolyte is used, the short-circuit time can be prolonged to 460 hours from 25 hours at most, and the maximum improvement amplitude is 1700%. 本发明公开了一种水系锌离子电池添加剂与电解液，所述水系锌离子电池添加剂为硝酸银，所述电解液为含有硝酸银的水系锌离子电解液。所述添加剂的浓度为0.001-0.1mol/L。本发明所述电解液与其他的电解液相比，使用本发明所述电解液时锌负极的循环稳定性有大幅改善，其发生短路的时间由25小时最多可以提高到460小时，最大提高幅度为1700%。