Lithium secondary battery

Details Lithium secondary battery Lithium secondary battery

2007-05-14

2009-08-18

Weiner, Laura S (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

C429S233000, C429S232000, C429S217000, C252S521300

Reexamination Certificate

active

07575830

ABSTRACT:
There is provided a lithium secondary battery with a negative electrode which comprises a negative electrode active material layer comprising alloy particles comprising silicon and tin and having an average particle diameter of 0.05 to 2 μm as an active material, and a negative electrode current collector, wherein the negative electrode active material layer has a storage capacity of 1,000 to 2,200 mAh/g and a density of 0.9 to 1.5 g/cm3and which thereby has a high capacity and a good cycle-characteristic. Thus, a lithium secondary battery having a high capacity and a long life and so designed as to exhibit these characteristics at the same time is provided.

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L. Y. Beaulieu, et al., “The Electrochemical Reaction of Li with Amorphous Si-Sn Alloys”, Journal of the Electrochemical Society, vol. 150, No. 2, 2003, pp. A149-A156.

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