▎ 摘　　要

NOVELTY - The composite anode material has a layer of silicon-carbon composite material, and a graphene oxide layer covering the layer of silicon-carbon composite material. The layer of silicon-carbon composite material further comprises a matrix of a conductive carbon material, and a binder, and silicon-carbon composite particles dispersed in the matrix. The silicon-carbon composite particles each comprise silicon particles intermixed with a carbon-based material. The carbon-based material is a conductive carbon material. USE - Silicon-carbon composite anode material for use in a lithium ion battery (claimed). ADVANTAGE - The composite anode material enables high capacity values e.g. 2200-2300 milliampere hour per gram (mAh/g) for lithium-silicon cells cycled at C/5 without capacity limitation or 1200 mAh/g at 1C when the capacity is limited to 1200 mAh/g. The composite anode material allows an excellent capacity retention over extended cycling times e.g. up to almost 100% over 1500 cycles for a capacity limitation of 1200 mAh/g cycled at 1C. The composite anode material has a high reliability, has a long life cycle, is resistant against Li-induced volume expansion, and allows the formation of a stable solid electrolyte interphase (SEI) layer, may have a high silicon loading, e.g. about 30 wt.%, which insures that a lower silicon loading, e.g. 5-10 wt.%, more typical of current batteries, is also possible. The lithium diffusion path is minimally hindered. The composite anode material can make use of recycled materials e.g. silicon recycled from photovoltaic cells or from wafer fragments. The silicon-carbon composite particles used in the composite anode material are excellently homogenous. The composite anode material can be fabricated in a relatively straightforward and economical fashion and can be fabricated on an industrial scale. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following: (1) a method for forming a composite anode material; and (2) a use of a graphene oxide layer for inhibiting or buffering a volume expansion of a layer of silicon-carbon composite material. DESCRIPTION OF DRAWING(S) - The drawing shows the scanning electron microscope image of silicon-carbon composite anode material with graphene oxide layer.