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:
Jul. 29, 2003
Filed:
Mar. 08, 2001
Applicant:
Inventors:
Takuya Hashimoto, Hirakata, JP;
Atsushi Fukui, Nara, JP;
Mutsumi Yano, Hirakata, JP;
Yasuhiko Itoh, Yawata, JP;
Assignee:
Sanyo Electric Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/38 ; H01M 4/40 ;
U.S. Cl.
CPC ...
H01M 4/38 ; H01M 4/40 ;
Abstract
The negative electrode of this invention includes, as a negative electrode active material, substantially amorphous aluminum alloy in the form of a powder with an average particle size of 50 &mgr;m or less represented by a composition formula, Al M , in which M is at least one element selected from the group consisting of La, Y, Yb, Ce, Gd, Nd, Sm, Pr, Er, Ni, Co, Cu and Fe; and 1≦x≦20. Owing to this negative electrode, a lithium secondary battery having large discharge capacity and exhibiting very good charge-discharge cycle performance can be realized.