▎ 摘　　要

NOVELTY - Preparing ferric salt material modified by graphene comprises (a) preparing strong acid graphite oxide, washing the strong acid graphite oxide multiple times with a mixed solution containing nitrogen methyl pyrrolidone and absolute ethanol to obtain neutral graphite oxide, and dispersing the neutral graphite oxide with water uniformly to obtain an aqueous graphite oxide dispersion, (b) using ascorbic acid as a reducing agent, reducing the graphite oxide in the graphite oxide aqueous dispersion to chemically reduced graphene under ultrasonic-assisted hydrothermal conditions, suction filtering and drying to obtain chemically reduced graphene, and (c) using the chemically reduced graphene to prepare a chemically reduced graphene ethanol dispersion, and preparing the graphene-modified ferrate material in which the ferrate and the chemically reduced graphene ethanol dispersion are co-deposited by the chemically reduced graphene coated ferrate. USE - The material is used as a cathode material in an ultra-iron battery (claimed). ADVANTAGE - The method significantly improves the stability of ferrate in humid environments and saturated potassium hydroxide solutions, as well as the actual discharge performance of alkaline super iron batteries composed of zinc under various conditions.