Invention Grant
- Patent Title: Core-shell type anode active material for lithium secondary battery, method for preparing the same and lithium secondary battery comprising the same
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Application No.: US12740906Application Date: 2007-11-06
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Publication No.: US09647262B2Publication Date: 2017-05-09
- Inventor: Ji-Jun Hong , Sung-Tae Ko , Yoon-Jeong Heo
- Applicant: Ji-Jun Hong , Sung-Tae Ko , Yoon-Jeong Heo
- Applicant Address: KR Siheung, Geonggi-do
- Assignee: Kokam Co., Ltd.
- Current Assignee: Kokam Co., Ltd.
- Current Assignee Address: KR Siheung, Geonggi-do
- Agency: Mintz Levin Cohn Ferris Glovsky and Popeo, P.C.
- Agent Kongsik Kim; Linda B. Azrin
- Priority: KR10-2007-0112289 20071105
- International Application: PCT/KR2007/005573 WO 20071106
- International Announcement: WO2009/061013 WO 20090514
- Main IPC: H01M4/131
- IPC: H01M4/131 ; H01M4/133 ; H01M4/485 ; H01M4/583 ; H01M10/052
Abstract:
The present invention relates to a core-shell type anode active material for a lithium secondary battery, a method of preparing the same, and a lithium secondary battery comprising the same. The anode active material for a lithium secondary battery according to the present invention comprises a carbon based material core portion; and a shell portion formed outside of the carbon based material core portion by coating the carbon based material core portion with a spinel-type lithium titanium oxide. The anode active material for a lithium secondary battery according to the present invention has the metal oxide shell portion, and thus has the improved conductivity, a high output density, and consequently excellent electrical characteristics.
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