POROUS SILICON-BASED ACTIVE MATERIAL FOR NEGATIVE ELECTRODE AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME

摘要

Provided is an active material for negative electrode including porous silicon-based particles and carbon particles, wherein the carbon particles include fine carbon particles and coarse carbon particles respectively having different average particle diameters.;Since an active material for negative electrode according to an embodiment of the present invention includes porous silicon-based particles as well as fine and coarse carbon particles respectively having different average particle diameters, the contact between the porous silicon-based particles and the carbon particles may be increased. As a result, lifetime characteristics of a lithium secondary battery may be further improved.

主权项

1. An active material for negative electrode comprising:
porous silicon-based particles; and carbon particles, wherein the carbon particles comprise fine carbon particles and coarse carbon particles respectively having different average particle diameters.