POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY

WIPO Patent Application WO/2010/079962

A2

The present invention provides a positive electrode active material comprising a lithium nickel-manganese-cobalt oxide expressed in Chemical Formula 1, wherein said lithium nickel-manganese-cobalt oxide has nickel contents of 40% or higher to the whole of transition metals, and has a surface coated with an ion conductive solid compound. The lithium secondary battery containing the positive electrode active material according to the present invention is advantageous in that high temperature safety is improved without degrading electrical conductivity, thus enabling the lithium secondary battery to effectively exert high capacity thereof.

CHANG, Sung kyun (106-901, Chonggu Narae Apt.Jeonmin-dong, Yuseong-gu, Daejeon 305-729, 305-729, KR)
장성균 (대전광역시 유성구 전민동 청구나래아파트 106동 901호, 305-729 Daejeon, 305-729, KR)
PARK, Hong-Kyu (3 Songrimmaeul Apt, Hagi-dong Yuseong-gu, Daejeon 305-759, 305-759, KR)

KR2010/000081

July 15, 2010

January 06, 2010

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LG CHEM, LTD. (20 Yoido-dong, Youngdungpo-gu, Seoul 150-721, 150-721, KR)
주식회사 엘지화학 (서울특별시 영등포구 여의도동 20번지, 150-721 Seoul, 150-721, KR)
CHANG, Sung kyun (106-901, Chonggu Narae Apt.Jeonmin-dong, Yuseong-gu, Daejeon 305-729, 305-729, KR)
장성균 (대전광역시 유성구 전민동 청구나래아파트 106동 901호, 305-729 Daejeon, 305-729, KR)

H01M4/48; B60L11/18; H01M10/36

SOHN, Chang Kyu (1403, Seongji Heights 2-cha Bldg.642-16, Yoksam 1-dong, Kangnam-gu, Seoul 135-910, 135-910, KR)

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