Birch, Stewart, Kolasch & Birch, LLP
Cathode active material and lithium secondary battery comprising the same
Disclosed herein is a cathode active material for a secondary battery, which includes a combination of one or more selected from compounds represented by Formula 1, one or more selected from compounds represented by Formula 2, and one or more selected from compounds represented by Formula 3,(1-s-t)[Li(LiaMn(1-a-x-y)NixCoy)O2]*s[Li2CO3]*t[LiOH]  (1)Li(LibMn(2-b)O4  (2)(1-u)LiFePO4*uC  (3)In these formulae 0<a<0.3; 0<x<0.8; 0>y>0.6; 0<s<0.05; 0<t<0.05; 0<b<0.3; 0.01<u<0.1, wherein a, b, x and y denote mole ratios; and s, t and u denote weight ratios. The disclosed cathode active material has long lifespan and storage characteristics at room temperature and/or high temperature and excellent safety, and is effectively used to fabricate a non-aqueous electrolyte type high power lithium secondary battery having excellent rate properties and power characteristics.
LG Chem, Ltd.
H H B H H H Y H Y B H
H01M H01M B60L H01M H01M H01M Y02E H01M Y02T B60L H01M
inventional inventional inventional inventional inventional inventional additional inventional additional inventional inventional
Soo Min Young Hwa Hong-Kyu Geun-Chang Keun Wan Ji Eun Sung kyun Sunkyu Sinyoung
Park Jung Park Chung An Lee Chang Kim Park