▎ 摘　　要

NOVELTY - Anode material of nano-silicon (12) having multilayer graphene (11) as a carrier and coated with silicon suboxide and with an amorphous carbon layer (13), comprises: multilayer graphene serving as a carrier; nano-silicon adsorbed on the multilayer graphene, both the multilayer graphene and the nanosilicon serving as a core; silicon suboxide and an amorphous carbon layer coated on the multilayer graphene and on the nanosilicon; and buffering holes (14) disposed on the anode material to provide buffering space. USE - The material is used for preparing an anode electrode for a lithium ion battery, and used as a power source in a portable device of a lithium ion batteries, a super-capacitor, and a solar cell. ADVANTAGE - The material has high battery capacity, improved Coulombic efficiency and capacity retention. The material reduces process cost for lithium-ion batteries that produces high energy density. The material suppresses the volume expansion of silicon in the charging and discharging cycles by units of an oxide or a carbon layer. The material simultaneously balances trade-off between the cost and efficiency. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for fabricating the anode material, involves (a) providing an etchant and a silicon-containing starting material to obtain a mixture solution after a mixing process, and adding a terminator to the mixture solution to make the mixture solution become a neutral solution, (b) adding multilayer graphene to the mixture solution for mixing before adding an organic carbon source, (c) subjecting the mixture solution with the added multilayer graphene to a calcination process to obtain a core shell material, and (d) subjecting the core shell material to a pulverizing and sieving process to obtain an anode material which has buffering holes and multilayer graphene as a carrier and is coated with silicon suboxide and with an amorphous carbon layer, before the core shell material is washed with a solvent. DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of a schematic drawing illustrating an anode material of nano-silicon which has multilayer graphene as a carrier and is coated with silicon suboxide and with an amorphous carbon layer. Multilayer-graphene (11) Nano-silicon (12) Amorphous carbon layer (13) Buffering holes (14)