NEGATIVE ELECTRODE MATERIAL FOR LITHIUM SECONDARY BATTERY AND SECONDARY BATTERY USING THE SAME

摘要

PROBLEM TO BE SOLVED: To obtain a lithium secondary battery having superior characteristics, such as recycling properties and safety by manufacturing a negative electrode that has no selectivity or restrictions regarding an electrolyte and uses a carbon material, where changes in the potential of the discharge of lithium ions are small.

SOLUTION: In a carbon material, a surface around the carbon material is covered with pitches, carbonization or graphitization burning is made without adhesion or condensation. In the carbon material for secondary batteries, the thickness of the film of a pitch constituent is set to 0.01 to 5 μm.

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