EP0506084A1
Expired / Lapsed
EP
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A hydrogen storage alloy and an electrode using the same
Assignee: Panasonic Holdings Corp
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Filing: 1992-03-27
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Granted: —
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Expires: 2012-03-27
Abstract
Abstract A hydrogen storage alloy preferably used for electrodes in an alkaline storage battery is provided. The alloy is of the general formula ZrMn w V x M y Ni z which comprises C15-type Laves phases having a crystal structure similar to that of MgCu₂ as a main alloy phase, where M is an element selected from the group consisting of Fe and Co; w, x, y, and z are respectively the mole ratios of Mn, V, M and Ni to Zr; the conditions 0.4 ≦ w ≦ 0.8, 0.1 ≦ x ≦ 0.3, 0 ≦ y ≦ 0.2, 1.0 ≦ z ≦ 1.5 and 2.0 ≦ w+x+y+z ≦ 2.4 are satisfied.
Inventors
- 👤 Yoshio Moriwaki
- 👤 Hajime Seri
- 👤 Yoichiro Tsuji
- 👤 Tsutomu Iwaki
- 👤 Yasuharu Yamamura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 10:11
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/38; H01M4/383; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10S; Y10S420/00; Y10S420/90
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
96 words
A hydrogen storage alloy of the general formula ZrMn w V x M y Ni z comprising C15-type Laves phases having a crystal structure similar to that of MgCu₂ as a main alloy phase, where M is an element selected from the group consisting of Fe and Co; w, x, y, and z are respectively the mole ratios of Mn, V, M and Ni to Zr; the conditions 0.4 ≦ w ≦ 0.8, 0.1 ≦ x ≦ 0.3, 0 ≦ y ≦ 0.2, 1.0 ≦ z ≦ 1.5 and 2.0 ≦ w+x+y+z ≦ 2.4 are satisfied.
Claim 2
Dependent Claim
31 words
A hydrogen storage alloy according to claim 1, wherein V, M and Ni are contained in such amounts so as to satisfy the relationships y ≦ x and z-x ≦ 1.2.
Claim 3
Dependent Claim
32 words
A hydrogen storage alloy according to claim 1 or 2, said hydrogen storage alloy having been heat-treated at a temperature of 1,000°C to 1,300°C in a vacuum or in an inert-gaseous atmosphere.
Claim 4
Dependent Claim
18 words
A hydrogen storage alloy electrode comprising the hydrogen storage alloy according to claim 1 or a hydride thereof.
Claim 5
Dependent Claim
18 words
A hydrogen storage alloy electrode comprising the hydrogen storage alloy according to claim 2 or a hydride thereof.
Claim 6
Dependent Claim
18 words
A hydrogen storage alloy electrode comprising the hydrogen storage alloy according to claim 3 or a hydride thereof.
References Cited (Backward Citations)
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