▎ 摘　　要

NOVELTY - A graphene sponge sheet is manufactured by preparing a slurry by mixing graphite powder and ground graphite powder or water containing graphite powder; preparing the dried graphite powder by drying the slurry; and heat-treating the dried graphite powder. USE - Manufacture of graphene sponge sheet used for negative electrode material, filter material and sensor (all claimed). Can be used as material for secondary battery anode materials, water treatment filter materials, gas treatment filter materials, and sensor parts requiring flexibility. ADVANTAGE - The method manufactures graphene sponge sheet with high yield and has excellent electrical properties.