▎ 摘　　要

NOVELTY - A composite electrode material comprises a core (11) made from graphite, tin (Sn), antimony (Sb), silicon (Si), and/or germanium (Ge), and a graphene nano-wall layer (13) which is grown from the core and covers the core. USE - A composite electrode material for composite electrode used for a lithium-based battery (all claimed). ADVANTAGE - The lithium-based battery demonstrates good charging and discharging characteristics and Coulombic efficiency during multiple cycling, as well as improved battery cycling life. The buffer layer can provide additional benefits to the electrode performance due to the chemical inertness and robustness in physical integrity of the buffer layer. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) manufacture of composite electrode material which involves providing core and growing graphene nano-wall layer from the core using microwave plasma assisted chemical vapor deposition; (2) composite electrode comprising substrate with 1st active material layer which is disposed on substrate and contains composite electrode material and binder, and 2nd active material layer which is disposed on 1st active material layer and contains a set of graphene nano-wall covered particles; (3) manufacture of composite electrode which involves providing substrate and coating 1st active material on substrate to form 1st active material layer, and growing 2nd active material layer on 1st active material layer using microwave plasma assisted chemical vapor deposition; and (4) lithium-based battery comprising composite electrode, lithium counter electrode, separator film disposed between composite electrode and lithium counter electrode, and electrolyte disposed between composite electrode and lithium counter electrode and disposed on 2 sides of the separator film. DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional diagram of a composite electrode material. Core (11) Conductive diamond film (12) Graphene nano-wall layer (13)