Negative electrode for non-aqueous electrolyte secondary...

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

2005-05-02

2009-12-22

Cantelmo, Gregg (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

C429S231800

Reexamination Certificate

active

07635540

ABSTRACT:
A negative electrode containing an alloying material and a graphite material for providing a non-aqueous electrolyte secondary battery with a high capacity and excellent cycle characteristics. The negative electrode includes graphite and an alloying material capable of electrochemically absorbing and desorbing Li. The alloying material includes an A phase composed mainly of Si and a B phase including an intermetallic compound of a transition metal element and Si. The A phase and/or the B phase include a microcrystalline or amorphous region. The weight percentage of the A phase relative to the total weight of the A phase and the B phase is greater than 40% and not greater than 95%. The weight percentage of the graphite relative to the total weight of the alloying material and the graphite is not less than 50% and not greater than 95%.

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IPDL Machine Translation of JP 2005-108774.
Chinese Office Action issued in corresponding Chinese Patent Application No. CN 2005101201884, dated Mar. 16, 2007.

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