Invention Grant
- Patent Title: Anode for lithium metal polymer secondary battery comprising surface patterned anodic current collector and method of preparing the same
- Patent Title (中): 包含表面图案化阳极集电器的锂金属聚合物二次电池用阳极及其制备方法
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Application No.: US11231238Application Date: 2005-09-19
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Publication No.: US07427455B2Publication Date: 2008-09-23
- Inventor: Young Gi Lee , Yong Sik Hong , Yong Joon Park , Kwang Sun Ryu
- Applicant: Young Gi Lee , Yong Sik Hong , Yong Joon Park , Kwang Sun Ryu
- Applicant Address: KR Daejeon
- Assignee: Electronics and Telecommunications Research Institute
- Current Assignee: Electronics and Telecommunications Research Institute
- Current Assignee Address: KR Daejeon
- Agency: Blakely, Sokoloff, Taylor & Zafman LLP
- Priority: KR10-2004-0097475 20041125
- Main IPC: H01M4/64
- IPC: H01M4/64 ; H01M4/72

Abstract:
There are provided an anode for a lithium metal polymer secondary battery comprising an anodic current collector having a surface on which a plurality of recesses having a predetermined shape are formed and a method of preparing the same. The plurality of recesses are formed on a surface of the anodic current collector using a physical method or a chemical method. In a lithium metal polymer secondary battery employing the anode, oxidation/reduction of lithium and the formation of dendrite occur only in the recesses formed by surface patterning of the anodic current collector. Thus, expanding and shrinking of a battery due to a change in the thickness of the lithium anode can be prevented and cycling stability and the lifespan of a battery can be improved.
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