LITHIUM SECONDARY BATTERY AND METHOD FOR MANUFACTURING NEGATIVE ELECTRODE MATERIAL THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a negative electrode material of a lithium secondary battery which has superior charge/discharge cycle characteristic and maintains high charge/discharge capacity for a long period. SOLUTION: The negative electrode material is manufactured by baking a mixture containing 5 to 50 pts.wt. graphite and 10 to 100 pts.wt. carbonizable binder (for example, pitch and tar) based on 100 pts.wt. of fine powders of a silicon compound (for example, of 0.1 to 2μm in average diameter). This negative electrode material achieves improved charge/discharge and cycle characteristics of the lithium secondary battery. COPYRIGHT: (C)2003,JPO