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Abstract

Provided is a method of producing a silicon material, comprising: slicing a silicon substrate with a fixed-abrasives wire to obtain a mixing slurry; and treating the mixing slurry by solid-liquid separation, so as to isolate a silicon material from the mixing slurry, which is applicable for a lithium-ion battery. With the simplified method, the production cost of silicon material is remarkably reduced. Furthermore, an anode material of a lithium-ion battery and a method of producing an anode electrode of a lithium-ion battery are provided. Since the silicon material produced by the method has high purity and fine granules, the extreme volumetric expansion of silicon under heat is largely reduced, and thus the cycle stability, electrical performance, and quality of a lithium-ion battery comprising the silicon material are improved.

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