Negative electrode for lithium ion secondary battery,...

Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode

Reexamination Certificate

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Reexamination Certificate

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07824801

ABSTRACT:
A negative electrode for a lithium ion secondary battery including a current collector and an active material layer carried on the current collector, wherein the active material layer includes a first layer and a second layer alternately laminated in a thickness direction of the active material layer, and wherein the first layer includes silicon or silicon and a small amount of oxygen and the second layer includes silicon and a larger amount of oxygen than the first layer. With the use of the negative electrode, it is possible to provide a high capacity lithium ion secondary battery having excellent high rate charge/discharge characteristics and superior cycle characteristics.

REFERENCES:
patent: 2006/0083987 (2006-04-01), Konishiike et al.
patent: 2006/0099507 (2006-05-01), Kogetsu et al.
patent: 06-325765 (1994-11-01), None
patent: 2002-083594 (2002-03-01), None
patent: 2002-358954 (2002-12-01), None
patent: 2004-047404 (2004-02-01), None
patent: 2004-349162 (2004-12-01), None
patent: 10-2003-0033913 (2003-05-01), None
patent: 10-2005-0055294 (2005-06-01), None
patent: 10-2006-0052584 (2006-05-01), None
patent: 10-2006-0054047 (2006-05-01), None
Machine Translation of JP 2004-349162, published Dec. 19, 2004.
Definition of “Discontinuous” retrieved Feb. 6, 2010.
Korean Notice of Allowance issued in corresponding Korean Patent Application No. 10-2005-0123846, dated on Oct. 12, 2007.
Korean Office Action, with English Translation issued in Korean Patent Application No. KR 10-2007-0092552, issued on Feb. 21, 2008.

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