▎ 摘　　要

NOVELTY - Preparing oxygen electrode by reducing graphene oxide involves oxidizing graphite powder to obtain graphite oxide and then performing ultrasonic treatment of graphite oxide to obtain graphene oxide. The graphene oxide is diluted with water and then the diluted graphene oxide is subjected to a hydrothermal reduction reaction to obtain desired product. USE - Method for preparing oxygen electrode by reducing graphene oxide used in photolysis of water, metal-air battery and other energy conversion device. ADVANTAGE - The method enables to prepare oxygen electrode by reducing graphene oxide in simple manner that is durable and cost-effective, and has high practical value and excellent catalytic properties.