NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, PRODUCTION METHOD THEREFOR AND LITHIUM SECONDARY BATTERY CONTAINING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a negative electrode active material for lithium secondary battery having excellent life property by suppressing cubical expansion, and to provide a production method therefor and a lithium secondary battery containing the same.SOLUTION: A negative electrode active material for lithium secondary battery is a carbon-metal composite or mixture containing a carbon-based active material including a first ceramic coating layer, and a metal-based active material, or containing a metal-based active material including a first ceramic coating layer, and a carbon-based active material.