| abstract |
The present invention relates to a negative electrode active material having excellent output characteristics and little gas generation, and an electrode including the negative electrode active material. The negative electrode active material includes MO-LTO composite particles (metal oxide (MO) -Lithium titanium oxide (LTO) composite particles), wherein the composite particles have a secondary particle Shell structure having a core and a shell covering all or at least a portion of the surface of the core, wherein the core is made of a material selected from the group consisting of lithium titanium oxide oxide (LTO), and the shell comprises a metal oxide. |