Negative electrode for non-aqueous electrolyte secondary...

Details Negative electrode for non-aqueous electrolyte secondary... Negative electrode for non-aqueous electrolyte secondary...

2005-11-30

2009-12-29

Weiner, Laura S (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

C429S245000, C429S233000, C429S231950, C429S128000

Reexamination Certificate

active

07638239

ABSTRACT:
In a negative electrode for a non-aqueous electrolyte secondary battery including an active material portion capable of electrochemically absorbing and desorbing Li, a current collector carrying the active material portion, and a buffer interposed between the active material portion and the current collector, the active material portion includes at least one selected from the group consisting of a Si simple substance, a Si alloy, and a Si compound, the current collector includes Cu, and the buffer has a first layer contacting the current collector and including a group A element which is at least one selected from the group A consisting of Sn, Al, and In, and a second layer contacting the active material portion and including a group B element which is at least one selected from the group B consisting of transition metal elements other than Cu.

REFERENCES:
patent: 6844113 (2005-01-01), Yagi et al.
patent: 2004/0234864 (2004-11-01), Kubota
patent: 2002-083594 (2002-03-01), None
patent: 2002-373644 (2002-12-01), None
patent: 2003-217576 (2003-07-01), None
patent: 2003-308832 (2003-10-01), None

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