Title:
POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2010/079958
Kind Code:
A2
Abstract:
The present invention provides a positive electrode active material comprising a nickel-based lithium oxide expressed by Chemical Formula 1, wherein said nickel-based, lithium transition metal oxide has nickel content of 40% or higher and has a surface coated with a polymer having a melting point of 80~300°C. 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 a high capacity thereof.
Inventors:
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)
박홍규 (대전광역시 유성구 하기동 송림마을아파트 301동 1306호, 305-759 Daejeon, 305-759, KR)
PARK, Sinyoung (1 Sejong Apt, Jeonmin-dong Yuseong-gu, Daejeon 305-728, 305-728, 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)
박홍규 (대전광역시 유성구 하기동 송림마을아파트 301동 1306호, 305-759 Daejeon, 305-759, KR)
PARK, Sinyoung (1 Sejong Apt, Jeonmin-dong Yuseong-gu, Daejeon 305-728, 305-728, KR)
Application Number:
KR2010/000076
Publication Date:
July 15, 2010
Filing Date:
January 06, 2010
Export Citation:
Assignee:
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)
PARK, Hong-Kyu (3 Songrimmaeul Apt, Hagi-dong Yuseong-gu, Daejeon 305-759, 305-759, KR)
박홍규 (대전광역시 유성구 하기동 송림마을아파트 301동 1306호, 305-759 Daejeon, 305-759, 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)
PARK, Hong-Kyu (3 Songrimmaeul Apt, Hagi-dong Yuseong-gu, Daejeon 305-759, 305-759, KR)
박홍규 (대전광역시 유성구 하기동 송림마을아파트 301동 1306호, 305-759 Daejeon, 305-759, KR)
International Classes:
H01M4/48; B60L11/18; H01M4/60; H01M10/36
Attorney, Agent or Firm:
SOHN, Chang Kyu (1403, Seongji Heights 2-cha Bldg.642-16, Yoksam 1-dong, Kangnam-gu, Seoul 135-910, 135-910, KR)
Download PDF: