Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode
Reexamination Certificate
2005-09-19
2008-09-23
Ryan, Patrick (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Electrode
C429S235000, C429S236000
Reexamination Certificate
active
07427455
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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Hong Yong Sik
Lee Young Gi
Park Yong Joon
Ryu Kwang Sun
Blakely , Sokoloff, Taylor & Zafman LLP
Electronics and Telecommunications Research Institute
Lewis Ben
Ryan Patrick
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