▎ 摘　　要

NOVELTY - Manufacture of a battery material involves ultrasonically-treating water to generate cluster water, dispersing powdered graphene in the cluster water to form graphene dispersion liquid, ultrasonically-treating the graphene dispersion liquid to form ultrasonically-treated liquid, inserting a metal electrode into the ultrasonically-treated liquid and applying a voltage to perform an ultrasonic voltage treatment, mixing the graphene dispersion liquid in the cluster water and the ultrasonically-treated liquid, applying a voltage, and generating a graphene-containing battery material. USE - Manufacture of battery material. ADVANTAGE - The method enables manufacture of battery material having excellent durability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of graphene, which involves ultrasonically-treating graphene dispersed liquid to obtain a graphene coarse dispersion from the graphite, drying the graphene coarse dispersion to obtain product in powder form.