Lithium secondary battery

Details Lithium secondary battery Lithium secondary battery

2006-03-01

2011-12-20

Maples, John S (Department: 1728)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

C429S220000, C429S223000, C429S231950, C429S233000

Reexamination Certificate

active

08080334

ABSTRACT:
In order to enhance charge and discharge efficiency and to improve cycle characteristics by increasing a facing area between a positive electrode active material and a negative electrode active material, in a negative electrode for lithium secondary battery having a current collector and an active material layer carried on the current collector, the active material layer includes a plurality of columnar particles. The columnar particles include an element of silicon, and are tilted toward the normal direction of the current collector. Angle θ formed between the columnar particles and the normal direction of the current collector is preferably 10°≦θ<90°.

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