Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode
Reexamination Certificate
2008-02-13
2011-11-29
Michener, Jennifer K. (Department: 1728)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Electrode
C429S209000, C429S133000
Reexamination Certificate
active
08067115
ABSTRACT:
A non-aqueous electrolyte secondary battery comprising at least a negative electrode having a current collector provided thereon with convex portions and columnar bodies formed on the convex portions, each of the columnar bodies comprising n stages (where n≧2) of overlaid columnar body portions alternately tilted to different orientations along a longitudinal direction of the current collector, a positive electrode having a positive electrode current collector provided on both surfaces thereof with a positive electrode mixture layer containing a positive electrode active material capable of inserting and extracting lithium ions reversibly, and a separator interposed between the positive electrode and the negative electrode in a confronting manner, wherein tip portions of the columnar body portions at the uppermost stage of the columnar bodies on the negative electrode are tilted toward a trailing end of winding direction.
REFERENCES:
patent: 2008/0171263 (2008-07-01), Ugaji et al.
patent: 2009/0123840 (2009-05-01), Shirane et al.
patent: 2009/0162746 (2009-06-01), Honda
patent: 2005-196970 (2005-07-01), None
patent: WO 2007046322 (2007-04-01), None
patent: WO 2007074654 (2007-07-01), None
Fujikawa Masato
Inoue Kaoru
Sato Toshitada
Shirane Takayuki
Ugaji Masaya
Chan Heng
McDermott Will & Emery LLP
Michener Jennifer K.
Panasonic Corporation
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