Carbon-Coated Silicon Particle Powder as the Anode Material for Lithium Ion Batteries and Method of Making the Same

摘要

A process for the production of coated silicon/carbon particles comprising:providing a carbon residue forming material;providing silicon particles;coating said silicon particles with said carbon residue forming material to form coated silicon particles;providing particles of a carbonaceous material;coating said particles of carbonaceous material with said carbon residue forming material to form coated carbonaceous particles;embedding said coated silicon particles onto said coated carbonaceous particles to form silicon/carbon composite particles;coating said silicon/carbon composite particles with said carbon residue forming material to form coated silicon/carbon composite particles; andstabilizing the coated composite particles by subjecting said coated composite particles to an oxidation reaction.;The coated composite particles will have a substantially smooth coating. The particles may be coated with multiple layers of carbon residue forming material/