LITHIUM SECONDARY BATTERY HAVING IMPROVED OUTPUT CHARACTERISTICS

摘要

The present invention relates to a lithium secondary battery using lithium titanium oxide (LTO) as a negative electrode active material. More specifically, the present invention relates to a secondary battery having improved input and output characteristics through the optimization of the pore ratio of LTO. The lithium secondary battery comprising a lithium titanium oxide negative electrode active material, according to the present invention, has a significantly improved power density through the maximization of reaction active sites with an electrolyte due to a porous structure.