| 摘要 |
Disclosed is a cathode active material for secondary batteries comprising at least one compound selected from the following formula 1: (1-s-t)[Li(LiaMn(1-a-x-y)NixCoy)O2]*s[Li2CO3]*t[LiOH] (1) wherein 0<a<0.2, 0<x<0.9, 0<y<0.5, a+x+y<1, 0<s<0.03, and 0<t<0.03; and a, x and y represent a molar ratio, and a and t represent a weight ratio. The cathode active material has long lifespan at room temperature and high temperatures and provides superior stability, although charge and discharge are repeated at a high current. |
