Invention Grant
US08367247B2 Cathode active material for lithium secondary batteries with high safety, method of preparing the same and lithium secondary batteries comprising the same
有权
具有高安全性的锂二次电池用阴极活性物质及其制备方法以及包含该二次电池的锂二次电池
- Patent Title: Cathode active material for lithium secondary batteries with high safety, method of preparing the same and lithium secondary batteries comprising the same
- Patent Title (中): 具有高安全性的锂二次电池用阴极活性物质及其制备方法以及包含该二次电池的锂二次电池
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Application No.: US12528151Application Date: 2008-11-11
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Publication No.: US08367247B2Publication Date: 2013-02-05
- Inventor: Seong-Bae Kim , Woo-Seong Kim , Yoon-Jeong Heo , Sung-Tae Ko , Ji-Jun Hong
- Applicant: Seong-Bae Kim , Woo-Seong Kim , Yoon-Jeong Heo , Sung-Tae Ko , Ji-Jun Hong
- Applicant Address: KR Incheon KR Siheung Gyeonggi-Do
- Assignee: Daejung EM Co., Ltd.,Kokam Co., Ltd.
- Current Assignee: Daejung EM Co., Ltd.,Kokam Co., Ltd.
- Current Assignee Address: KR Incheon KR Siheung Gyeonggi-Do
- Agency: Edwards Wildman Palmer LLP
- Priority: KR10-2008-0111004 20081110
- International Application: PCT/KR2008/006643 WO 20081111
- International Announcement: WO2010/053222 WO 20100514
- Main IPC: H01M4/485
- IPC: H01M4/485 ; H01M4/1391 ; B05D5/12
Abstract:
A cathode active material for a lithium secondary battery includes a lithium metal oxide secondary particle core formed by agglomerating lithium metal oxide primary particles; and a shell formed by coating the secondary particle core with barium titanate and metal oxide. This cathode active material allows making a lithium secondary battery having improved safety, particularly in thermal stability and overcharging characteristics.
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