Anode and battery using the same

Details Anode and battery using the same Anode and battery using the same

2007-06-05

2007-06-05

Ryan, Patrick Joseph (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

C429S233000

Reexamination Certificate

active

10745156

ABSTRACT:
Provided is a battery capable of improving cycle characteristics without increasing the thickness of an anode current collector. An anode active material layer including at least one kind selected from the group consisting of Sn and compounds thereof is formed on an anode current collector having a projection on a substrate through a vapor deposition method, a liquid-phase deposition method or a sintering method, and the anode current collector and the anode active material layer are alloyed with each other in at least a portion of an interface therebetween. By a function of the projection, the anode current collector can be prevented from being cracked into small pieces due to expansion and shrinkage of the anode active material layer. Further, a stress on the anode active material layer due to the expansion and the shrinkage can be spread out so that cracks produced in the anode active material layer can be scattered in various directions to reduce the size of the cracks.

REFERENCES:
patent: 6723468 (2004-04-01), Lebouchard et al.
patent: 2003/0180619 (2003-09-01), Tamura et al.

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