ANODE ACTIVE MATERIAL HAVING HIGH CAPACITY FOR LITHIUM SECONDARY BATTERY, PREPARATION THEREOF AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME

摘要

The anode active material of the present invention comprises an amorphous SiOx C composite with a core-shell structure consisting of a core comprising particles of a silicon oxide (SiOx) free of Si crystals and a shell which is a coating layer formed on at least a part of the surface of the core and comprising a carbon material, thereby providing high capacity and effectively inhibiting volume expansion which has been caused in the use of Si, to improve life characteristics, and eventually providing a lithium secondary battery having such characteristics.

主权项

1. An anode active material, comprising an amorphous SiOx—C composite with a core-shell structure consisting of a core comprising particles of a silicon oxide (SiOx) free of Si crystals and a shell which is a coating layer formed on at least a part of the surface of the core and comprising a carbon material.