COMPOSITE PARTICLE AND MANUFACTURING METHOD THEREFOR AS WELL AS NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND NONAQUEOUS ELECTROLYTE BATTERY USING THE NEGATIVE ELECTRODE

摘要

PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery having a high discharge capacity and exhibiting small decrease in a discharge capacity even with charge/discharge repeated. SOLUTION: A composite material in which a carbon material is uniformly and densely coated on silicon particles is produced by compositely adding a compressive force, a shearing force and an impact force to the silicon particles and the carbon material as a microscopic nano-structure in a mixed state, and the composite material is used as a negative electrode active material. COPYRIGHT: (C)2005,JPO&NCIPI