▎ 摘　　要

NOVELTY - Preparation of cellulose-sponge-based conductive composite material involves preparing oxidized graphene and/or carbon nanotube cellulose sponge, naturally air-drying, reducing resultant product, and preparing graphene and/or carbon nanotube cellulose sponge, observing color of the oxidized graphene and/or carbon nanotube cellulose sponge such that the color of the surface of the cellulose sponge is changed from yellow to metallic gray, naturally air-drying, washing using deionized water, and adding softener. USE - Preparation of cellulose-sponge-based conductive composite material used in flexible pressure sensor (claimed) used in medical detection. ADVANTAGE - The flexible pressure sensor using cellulose-sponge-based conductive composite material is prepared under less pressure condition. DETAILED DESCRIPTION - Preparation of cellulose-sponge-based conductive composite material involves dispersing oxidized graphene and/or carbon nanotubes in water or an organic solvent, forming dispersion of graphene oxide and/or carbon nanotubes, immersing cellulose sponge in the dispersion liquid, reacting cellulose sponge with oxidized graphene and/or carbon nanotube dispersion, preparing oxidized graphene and/or carbon nanotube cellulose sponge, removing oxidized graphene and/or carbon nanotube cellulose sponge, naturally air-drying, reducing resultant product, and preparing graphene and/or carbon nanotube cellulose sponge, observing color of the oxidized graphene and/or carbon nanotube cellulose sponge such that the color of the surface of the cellulose sponge is changed from yellow to metallic gray, naturally air-drying, washing using deionized water, and adding softener.