GRAPHITE-BASED CARBON MATERIAL, METHOD OF MANUFACTURING THE CARBON MATERIAL, CARBON MATERIAL OF NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, AND THE LITHIUM SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a graphite-based carbon material for lithium secondary battery having proper initial efficiency and high discharge capacity, to provide a method of manufacturing the carbon material, and a lithium secondary battery using the material as a negative electrode. SOLUTION: In this method of manufacturing the graphite-based carbon material, after at least either of natural graphite and artificial graphite is crushed in an organic solvent, solid contents are separated from the graphite through filtration and then dried.