▎ 摘　　要

NOVELTY - Preparation of multi-layered graphene nanosheet using apple peel fiber biomass as precursor involves washing and sun dying the apple peel mechanically to remove the impurities, carbonizing the raw precursor to form a char, treating the char with an aqueous solution comprising the activating agent, and pyrolyzing the carbon induced with the activating agent or pore-forming agents acting as catalyst or template at high temperature. USE - Preparation of multi layered graphene nanosheet used in supercapacitors, batteries, superabsorbent and catalysis (all claimed). ADVANTAGE - The method efficiently and economically produces multi-layered graphene material by simple carbonization and activation of biologically waste material, and reduces environmental pollution.