▎ 摘　　要

NOVELTY - Manufacture of activated carbon material from a biomass involves (i) producing a precursor material containing biomass, a graphite catalytic precursor and an activating agent, (ii) inserting the precursor material into a pyrolytic reactor, (iii) washing the obtained material, and (iv) filtering and drying. The biomass contains at least 60 wt.% cellulose. USE - Manufacture of activated carbon material used for preparing graphene nanosheets used in manufacture of sensors, electrodes, conductive thin film, and components of aircraft, motor vehicles and building materials, telecommunications, electronics, composites, smart fabrics, aerogels, and medical applications (all claimed). ADVANTAGE - The prepared activated carbon provides graphene nanosheets having excellent thermal, optical and electrical properties. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for graphene nanosheets, which comprise 10-90Å micropores and narrow mesopores.