POSITIVE ELECTRODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME

WIPO Patent Application WO/2010/079964

A2

The present invention provides a positive electrode active material comprising a lithium nickel-based oxide expressed in Chemical Formula 1, wherein said lithium nickel-based oxide has nickel contents of 40% or higher to the whole of transition metals, and has a surface on which a first coating layer is formed, and a second coating layer is formed on the first coating layer. The first coating layer consists of a compound (non-reactive material) selected from a group consisting of an oxide, a nitride, and a sulfide which have no reactivity to an electrolyte, and a mixture thereof or a composite thereof, and the second coating layer consists of a carbon-based material.

JP04284374	NONAQUEOUS ELECTROLYTIC SECONDARY BATTERY
JP02267861	NONAQUEOUS ELECTROLYTE BATTERY AND ITS MANUFACTURE
WO/2004/004027	BATTERY INCLUDING CARBON FOAM CURRENT COLLECTORS

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)

KR2010/000084

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; H01M4/58; 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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