▎ 摘　　要

NOVELTY - Electric arc preparation of a graphene-coated silicon material comprises (1) pressing graphite powder into cathode, mixing graphite powder and silicon-based material, adding binder, mixing evenly, and pressing into an anode, where the mass ratio of graphite powder, silicon-based material and binder in the anode is (1-4): (0.1-2.6 ): (0.125-0.4), and (2) applying a voltage between the cathode and the anode to generate an arc discharge between the cathode and the anode, so that the generated graphene in-situ coats the silicon-based material in the anode, washing with a strong alkali to obtain a graphene-coated silicon anode material. USE - The electric arc preparation of a graphene-coated silicon material is useful in the material of the lithium-ion battery (claimed). ADVANTAGE - The electric arc preparation of a graphene-coated silicon material: has good crystallinity and few defects, and has complete coating and low dosage. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a graphene-coated silicon material.