▎ 摘　　要

NOVELTY - A mixed solution of hydrogen peroxide and 98% concentrated sulfuric acid are mixed. The content of mixed solution of hydrogen peroxide is 10-60 %mass. The content of 98% concentrated sulfuric acid is 40-90 %mass. 1-30 %mass Graphene is added to mixture, heated at 50-110 degrees C, constantly stirred for 10-80 minutes, and activated graphene is separated, washed and dried or dried, to obtain active graphene. The active graphene is surface treated with silane coupling agent or capping agent 107. USE - Surface treatment of graphene used for producing thermally-conductive silicone sheet.