▎ 摘　　要

NOVELTY - Preparing graphene modified material involves dispersing graphite in a water mixture of tetrahydrofuran, adding perchloric acid and lithium hyponitrite to obtained mixture, carrying out ultrasonic treatment, subjecting modified material to centrifugal separation to separate product. The obtained product is washed with deionized water, and washed with isopropyl alcohol to prepare final product. USE - Method for preparing graphene modified material. ADVANTAGE - The method enables to prepare graphene modified material has simple preparation method, high efficiency, high yield, high practical value, high performance fiber, and improves composite processability of graphene.