| abstract |
The present invention relates to a negative electrode active material for a lithium secondary battery and a lithium secondary battery comprising the same, and more particularly, to a lithium secondary battery comprising a 1,1-diisopropyl-3,4-diphenyl-2,5-silole (DPS) And a lithium secondary battery comprising the negative active material. The lithium secondary battery using the 1,1-diisopropyl-3,4-diphenyl-2,5-silole copolymer according to the present invention as a negative electrode active material has excellent capacity value And stable battery characteristics. It is possible to maintain the capacity without loss of the Li source, and is lighter than conventional graphite materials, so that it can be usefully used in a lithium secondary battery of a portable device. |