Improvement of high- and low-temperature characteristics of nickel-metal hydride secondary batteries using rare-earth compounds

Improvement of high- and low-temperature characteristics of nickel-metal hydride secondary batteries using rare-earth compounds

Improvement of high- and low-temperature characteristics of nickel–metal hydride secondary batteries using rare-earth compounds is discussed. High-temperature charge characteristics are improved by coating a sintered positive electrode with yttrium hydroxide due to the increased oxygen evolution ove...

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Bibliographic Details
Published in:Journal of alloys and compounds Vol. 408; pp. 288 - 293
Main Authors: Shinyama, Katsuhiko, Nakamura, Hiroshi, Nohma, Toshiyuki, Yonezu, Ikuo
Format: Journal Article
Language:English
Published: Elsevier B.V 09-02-2006
Subjects:
Hydrogen-absorbing alloy
Nickel–metal hydride secondary battery
Rare-earth compounds
Sintered nickel positive electrode
Temperature characteristics
Sintered nickel positive electrode
Nickel–metal hydride secondary battery
Hydrogen-absorbing alloy
Temperature characteristics
Rare-earth compounds
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Summary:Improvement of high- and low-temperature characteristics of nickel–metal hydride secondary batteries using rare-earth compounds is discussed. High-temperature charge characteristics are improved by coating a sintered positive electrode with yttrium hydroxide due to the increased oxygen evolution overpotential. Low-temperature discharge characteristics are also improved by adding rare-earth oxides into a negative electrode due to the increased ratio of metallic nickel at the surface of the hydrogen-absorbing alloy.
Bibliography:SourceType-Scholarly Journals-2
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ObjectType-Conference Paper-1
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SourceType-Conference Papers & Proceedings-1
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ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2005.04.111