▎ 摘　　要

NOVELTY - Preparing a manganese dioxide/carbon thin film positive electrode material involves adding manganese salt, oxidant and pH adjuster to water to dissolve to form solution A, and dispersing the acid into the solution A and stirring at room temperature to form a uniform mixed solution. The mixed solution is put at 100-200 degrees C and the water is entered for thermal reaction. The hydrothermal reaction is completed and cooled to room temperature, washed, filtered and dried to obtain manganese dioxide nanowires. The manganese dioxide nanowires are in the alpha phase and the length is greater than 100 mu m. The ultrasonic dispersion of the manganese dioxide nanowires and conductive carbon materials is carried out into absolute ethanol to form a uniform suspension of manganese dioxide. The vacuum filtration and drying of the suspension are carried out to obtain manganese dioxide/carbon thin film positive electrode material. USE - Method for preparing a manganese dioxide/carbon thin film positive electrode material for a flexible zinc ion battery (claimed). ADVANTAGE - The method enables to prepare a manganese dioxide/carbon thin film positive electrode material with excellent conductivity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a flexible zinc ion battery, which comprises a cathode flexible zinc foil, a diaphragm, an aqueous electrolyte, a leakage-proof sealing film and a conductive lead.