COMPOSITE NEGATIVE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, PROCESS FOR PRODUCTION OF THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME

摘要

Disclosed is a composite negative active material comprising a fusion product of a graphite material and a readily-graphitizable graphitizing carbon material. The composite negative active material can be produced by heating a mixture of a graphite material and a readily-graphitizable graphitizing carbon material at 700 to 1300°C to produce a fusion product and milling the fusion product. The composite negative active material enables to provide a non-aqueous electrolyte secondary battery having an excellent input/output property, a high energy density, and a long service life.