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:
Oct. 08, 2002
Filed:
Apr. 03, 2000
Negative electrode material containing bismuth-coated zinc powder particles for use in alkaline cell
Applicant:
Inventors:
Toshiya Kitamura, Akita, JP;
Masayoshi Matsumoto, Yokohama, JP;
Mikio Hashimoto, Minami-Akita-gun, JP;
Assignee:
Dowa Mining Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/12 ; H01M 4/42 ; H01M 4/38 ;
U.S. Cl.
CPC ...
H01M 4/12 ; H01M 4/42 ; H01M 4/38 ;
Abstract
A negative electrode material for use in an alkaline cell. The negative electrode material comprising bismuth-coated zinc powder particles containing at least one element selected from the group consisting of Al, Bi and In. The zinc or zinc alloy powder preferably has a particle size within the range of 10 &mgr;m to 1000 &mgr;m. The bismuth-coated zinc powder particles are obtained by immersing a mixture of a zinc powder and a metallic bismuth powder in an aqueous alkaline solution to deposit bismuth on surfaces of the zinc powder particles by displacement.