▎ 摘　　要

NOVELTY - Graphene nano-platelet is claimed. The graphene nano-platelet thickness is 0.35-10 nm, specific surface area is greater than 100 m2/g, and graphene nano platelet are single-layer or multi-layer powders. USE - Used as graphene nano-platelet. ADVANTAGE - The graphene nano-platelet has simple preparation process and low cost; and is suitable for industrial production and environmentally friendly. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparation of graphene nano platelet (i) mixing the graphite and polysaccharide polymers and mechanical grinding to obtain mixed powder of graphene nanosheet/polysaccharide polymer, (ii) adding mixed powder of graphene nanosheet/polysaccharide polymer obtained n step (i) into a solvent to obtain graphene nanosheet/polysaccharide polymer mixture, (iii) centrifuging the mixture of graphite nanosheet/polysaccharide polymers described in step (ii) and carrying out dialysis treatment to obtain graphene nanosheets dispersed in water, and (iv) drying the graphene nanosheet dispersed in water of step (iii) to obtain final product.