▎ 摘　　要

NOVELTY - The zinc ion battery comprises a positive electrode, a negative electrode, electrolyte and a diaphragm. The positive electrode is made of manganese dioxide electrode material. The negative electrode is made of polyimide organic electrode material. The electrolyte is aqueous solution containing zinc ion. The polyimide is prepared by using 3, 4, 9, 10-perylene tetracarboxylic dianhydride and diamine diphenyl ether as reaction monomer. USE - Zinc ion battery. Uses include but are not limited to mobile communication device, daily living goods, aerospace, aviation, and machinery. ADVANTAGE - The zinc ion battery has high capacity, environment-friendly, safety cost, and improved cycle stability, charging and discharging circulation stability, and energy density. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of zinc ion battery.