Invention Grant
- Patent Title: Negative active material for lithium secondary battery, method for preparing the same, negative electrode comprising the same, and lithium secondary battery comprising same
- Patent Title (中): 锂二次电池用负极活性物质,其制造方法,含有该负极的负极和包含该负极的锂二次电池
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Application No.: US12294653Application Date: 2006-12-29
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Publication No.: US08999581B2Publication Date: 2015-04-07
- Inventor: Sung-man Lee , Jong-hyuk Lee
- Applicant: Sung-man Lee , Jong-hyuk Lee
- Applicant Address: KR
- Assignee: Samsung Electronics Co., Ltd.
- Current Assignee: Samsung Electronics Co., Ltd.
- Current Assignee Address: KR
- Agency: Cantor Colburn LLP
- Priority: KR10-2006-0046263 20060523; KR10-2006-0054475 20060616
- International Application: PCT/KR2006/005889 WO 20061229
- International Announcement: WO2007/136164 WO 20071129
- Main IPC: H01M4/13
- IPC: H01M4/13 ; H01M4/58 ; H01M4/587 ; H01M4/133 ; H01M4/134 ; H01M4/36 ; H01M4/38 ; H01M10/0525

Abstract:
The present invention relates to a negative active material for a rechargeable lithium battery, a method of manufacturing the negative active material, and a rechargeable lithium battery including the negative active material. The negative active material includes a sphere-shaped first graphite particle that a first particle precursor, a flake-shaped graphite piece, is linked to each other; and at least one second particle dispersed between the flake-shaped graphite pieces inside the sphere-shaped first graphite particle and selected from the group consisting of at least one element particle selected from the group consisting of Si, Sn, Al, Ge, Pb, and combinations thereof; at least one element compound particle selected from the group consisting of Si, Sn, Al, Ge, Pb, and combinations thereof; a composite particle including at least one element selected from the group consisting of Si, Sn, Al, Ge, Pb, and combinations thereof; a carbon composite particle including at least one element selected from the group consisting of Si, Sn, Al, Ge, Pb, and combinations thereof; and a combination particle thereof.
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