The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 20, 2007
Filed:
Mar. 26, 2004
Atsushi Fukui, Kobe, JP;
Mariko Torimae, Kobe, JP;
Yasuyuki Kusumoto, Kobe, JP;
Hisaki Tarui, Kobe, JP;
Atsushi Fukui, Kobe, JP;
Mariko Torimae, Kobe, JP;
Yasuyuki Kusumoto, Kobe, JP;
Hisaki Tarui, Kobe, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A negative electrode for a rechargeable lithium battery which is obtained by sintering under a non-oxidizing atmosphere, in the form of a layer on a surface of a metal foil current collector, an anode mix containing a binder and particles of active material containing silicon and/or a silicon alloy; the negative electrode being characterized in that the metal foil current corrector has projections and recesses on its surface, the projection is shaped to have a recurved side face portion that curves more outwardly as it extends closer to a distal end of the projection, and the binder penetrates into spaces defined by the recurved side face portions.