CARBON MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND MANUFACTURING METHOD FOR CARBON MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

摘要

An object of the present invention is to provide a non-aqueous electrolyte secondary battery having excellent input/output characteristics even under a low temperature. In order to solve this problem, it is a composite particle of graphite particles and carbon particles having a primary particle diameter of 3 nm or more and 500 nm or less, preferably a composite particle further containing amorphous carbon, and a composite particle that satisfies specific conditions (carbon material) By using as a negative electrode active material of a nonaqueous electrolyte secondary battery, the input/output characteristics at a low temperature of the nonaqueous electrolyte secondary battery can be significantly improved.