Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode
Reexamination Certificate
2008-01-08
2008-01-08
Cantelmo, Gregg (Department: 1745)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Electrode
C429S219000, C204S192120, C204S192150, C204S192170, C204S192230
Reexamination Certificate
active
07316867
ABSTRACT:
A thin film for an anode of a lithium secondary battery having a current collector and an anode active material layer formed thereon is provided. The anode active material layer is a multi-layered thin film formed by stacking a silver (Ag) layer and a silicon-metal (Si-M) layer having silicon dispersed in a base made from metal reacting with silicon while not reacting with lithium. The cycle characteristic of the thin film for an anode can be improved by suppressing the volumetric expansion and shrinkage of Si occurring during charging/discharging cycles. Thus, a lithium secondary battery with improved life characteristics by employing the thin film for an anode, which greatly improves the chemical, mechanical stability of the interface between an electrode and an electrolyte.
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Baik Hong-Koo
Lee Sung-Man
Oh Joo-yeal
Park Young-sin
Buchanan & Ingersoll & Rooney PC
Cantelmo Gregg
Samsung SDI & Co., Ltd.
Wang Eugenia
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