Title:
METAL OXIDE/METAL HYDRIDE TYPE ALKALINE BATTERY AND MANUFACTURE OF HYDROGEN STORAGE ALLOY ANODE THEREOF
Document Type and Number:
Japanese Patent JP3816138
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prolong the cycle life of a hydrogen storage alloy by substituting a part of Co in the alloy with Fe and Cu in an alkaline battery formed of an anode made of the hydrogen storage alloy material.
SOLUTION: In a metal oxide-metal halide type alkaline battery formed of metal oxide-containing cathode and an anode made of a hydrogen storage alloy material having a CaCu5 type crystal structure, the alloy composition is set to be MmNiuAlwMnxCoyMz. In the formula, Mm stands for a misch metal, M for Fe or Cu, the parameters x, z, y, and w satisfy the following: 0.2≤x≤0.4, 0.1≤z≤0.4, 0.2≤y≤0.4, 0.3≤w≤0.5, 4.9≤u+w+x+y+z≤5.1, and Mm contains 20-60 wt.%, preferably 40-60 wt.%, of La and the balance Ce. Since the defined alloy of which a part of Co is substituted with Fe and/or Cu is used as an anode, the cycle life of the resultant battery is prolonged.
Inventors:
Frank Lichtenberg
Uwe Koehler
Claus Klein Sorgen
Andreas Feltzer
Alexander Bouvier
Uwe Koehler
Claus Klein Sorgen
Andreas Feltzer
Alexander Bouvier
Application Number:
JP8286396A
Publication Date:
August 30, 2006
Filing Date:
April 04, 1996
Export Citation:
Assignee:
VARTA Automotive Systems GmbH
International Classes:
H01M4/24; H01M4/38; H01M10/30; (IPC1-7): H01M4/38
Domestic Patent References:
| JP7286225A | ||||
| JP9213319A | ||||
| JP6279899A |
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Einzel Felix-Reinhard
Toshiomi Yamazaki
Takuya Kuno
Einzel Felix-Reinhard