▎ 摘 要
NOVELTY - A composite electrode material comprises activated Litchi carbon and graphene in a mass ratio of 1:1-3. USE - Composite electrode material for supercapacitors (claimed). ADVANTAGE - The composite electrode material has improved porosity, increased specific surface area, improved occurrence of graphene sheet re-stacking phenomenon, and solves the problem of capacity reduction, has improved structure stability, chemical stability, specific capacity and cycle performance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) preparation of the composite electrode material, which involves mixing activated litchi carbon, graphene, ethanol and water, grinding, stirring, and drying; and (2) use of the composite electrode material in supercapacitors.