Zinc ion battery positive electrode material, preparation method thereof and zinc ion battery

Abstract

The invention relates to the technical field of zinc ion battery preparation, and discloses a zinc ion battery positive electrode material and a preparation method thereof, and a zinc ion battery, the preparation method of the zinc ion battery positive electrode material comprises the following steps: providing water and absolute ethyl alcohol, uniformly stirring to obtain a mixed solvent, providing a vanadium source and chlorate, and dissolving in the mixed solvent to obtain the zinc ion battery positive electrode material. And adding concentrated hydrochloric acid to obtain an acidic mixed solution, carrying out heating and heat preservation operation in a reaction kettle to obtain a vanadium oxide, carrying out washing and drying, providing a zinc-containing organic additive, adding the zinc-containing organic additive and the clean vanadium oxide into a grinding machine, and carrying out mixing and grinding to obtain the positive electrode material of the zinc ion battery. By adding the zinc-containing organic additive, the damage of deposition of zinc ions to the structure of the positive electrode material of the zinc ion battery is avoided, and the organic additive generally contains hydrophobic groups, has certain hydrophobicity, reduces side reactions such as hydrogen evolution and corrosion, and improves the structural stability, so that the charge-discharge cycle performance is improved, and the specific capacity is large.

Images