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. 30, 2001
Filed:
Feb. 11, 2000
Yoichiro Tsuji, Katano, JP;
Osamu Yamamoto, Hirakata, JP;
Yoshinori Toyoguchi, Yao, JP;
Hiromu Matsuda, Kawabe-gun, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A hydrogen storage alloy electrode having a high capacity and excellent cycle characteristics is provided. The electrode is made from particulate active material comprising a hydrogen storage alloy of body-centered cubic crystal structure or body-centered tetragonal crystal structure, said hydrogen storage alloy being represented by the general formula Ti,M,Cr,M,L,, wherein M,is at least one element selected from the group consisting of Nb and Mo; M,is at least one element selected from the group consisting of Mn, Fe, Co, Cu, V, Zn, Zr, Ag, Hf, Ta, W, Al, Si, C, N, P and B; L is at least one element selected from the group consisting of rare-earth elements and Y; 0.2≦a≦0.7; 0.01≦b≦0.4; 0.1≦c≦0.7; 0≦d≦0.3; 0≦e≦0.03; and a+b+c+d+e=1.0, and said particulate active material having a Ti—Ni system alloy phase in the surface portion thereof.