Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode
Reexamination Certificate
2005-11-16
2011-10-04
Cantelmo, Gregg (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Electrode
C429S235000, C429S218100
Reexamination Certificate
active
08029932
ABSTRACT:
An anode capable of improving cycle characteristics and a battery using it are provided. An anode active material layer containing Si is provided on an anode current collector. The anode current collector is roughened by providing a projection on a base material with a ten point height of roughness profile Rz1of 2.0 μm or less. A value of a difference, Rz2−Rz1obtained by subtracting the ten point height of roughness profile Rz1of the base material from a ten point height of roughness profile Rz2of the anode current collector is from 0.2 μm to 5.1 μm. Thereby, even when the anode active material is expanded and shrunk due to charge and discharge, breakage of the anode current collector, fall off of the anode active material layer and the like can be prevented.
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Sunnen, “Technical Data Surface Finish Information”, Jun. 10, 2010, www.sunnen.com/graphics/assets/documents/d0235a2dedle.pdf.
Kawase Kenichi
Konishiike Isamu
Cantelmo Gregg
K&L Gates LLP
Sony Corporation
Wang Eugenia
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