| abstract |
In one embodiment of the present invention, a plurality of nano silicon particles are embedded in a carbon-based material, and a porous silicon-carbon-based composite including a plurality of pores is formed, wherein the carbon-based material is graphite particles, soft carbon, It comprises a hard carbon or a combination thereof, and in the carbon-based material, soft carbon provides a negative active material for a lithium secondary battery having a carbon layer shape. |