Abstract:Nowadays, aqueous zinc ion batteries have shown great potential for development. Their significant advantages include low cost, high safety, and abundant reserves of raw material zinc. They are considered to be one of the most promising energy storage systems. With the continuous in-depth study of aqueous zinc-ion batteries, researchers have found that the zinc anode of aqueous zinc-ion batteries faces some very serious problems, such as easy growth of dendrites and corrosion passivation, which greatly limit its commercialization process. In order to solve the problems faced by aqueous zinc anodes, 6-Cl-IP was used as an electrolyte additive in this paper. By adjusting the uniform deposition of Zn2+, the formation of zinc dendrites was inhibited, and the cycle stability of the battery was improved, so as to achieve the purpose of protecting the zinc anode. The results showed that the aqueous zinc ion battery could be stably cycled for 550 h at a current density of 1 mA/cm2 after adding 6-Cl-IP as an electrolyte additive to ZnSO4-based electrolyte system. Zn||V2O5 full cell could also be stably cycled for 200 cycles at a current density of 0.2 A/g, and the reversible specific capacity was as high as 127.3 mAh/g. This result provided a new strategy for improving the performance of aqueous zinc-ion batteries.