Lg Chem, Ltd

Lg Energy Solution, Ltd.

Won-Hee Jeong

Dae-Hong Kim

Soo-Hyun Lim

Tae-Jin Park

Min-A Park

Jae-Kyung Kim

The present disclosure relates to a negative electrode active material having excellent output characteristics and causing little gas generation, and an electrode including the negative electrode active material. The negative electrode active material includes metal oxide-lithium titanium oxide (MO-LTO) composite particles which have a shape of secondary particles formed by aggregation of primary particles, wherein the primary particles have a core-shell structure including a core and a shell totally or at least partially covering the surface of the core, the core includes primary particles of lithium titanium oxide (LTO), and the shell includes a metal oxide.

Negative electrode active material having improved output characteristics and electrode for electrochemical device including the negative electrode active material

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

Lithium secondary battery having improved output characteristics

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Daejeon, South Korea

Won-Hee Jeong