Self‐Discharge Mechanism of Nickel‐Hydrogen Batteries Using Metal Hydride Anodes

The self-discharge mechanism of nickel-hydrogen batteries using metal hydride anodes is investigated and discussed by dividing the capacity loss during the storage in open-circuit conditions into two parts, i.e., reversible and irreversible ones. The reversible capacity loss is attributed to the des...

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Bibliographic Details
Published in:Journal of the Electrochemical Society 1989-05, Vol.136 (5), p.1351-1355
Main Authors: Iwakura, Chiaki, Kajiya, Yoshio, Yoneyama, Hiroshi, Sakai, Tetsuo, Oguro, Keisuke, Ishikawa, Hiroshi
Format: Article
Language:English
Subjects:
250902 - Energy Storage- Batteries- Performance & Testing
400400 - Electrochemistry
ANODES
COPPER
DESORPTION
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELECTRODES
ELEMENTS
ENERGY STORAGE
HYDRIDES
HYDROGEN
HYDROGEN COMPOUNDS
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
LAYERS
METAL-GAS BATTERIES
METALS
NICKEL-HYDROGEN BATTERIES
NONMETALS
PERFORMANCE TESTING
TESTING
TRANSITION ELEMENTS
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Summary:The self-discharge mechanism of nickel-hydrogen batteries using metal hydride anodes is investigated and discussed by dividing the capacity loss during the storage in open-circuit conditions into two parts, i.e., reversible and irreversible ones. The reversible capacity loss is attributed to the desorption of hydrogen from the metal hydride anode and the irreversible capacity loss to the deterioration of the hydrogen-absorbing alloy. Microencapsulation of the alloy with a thin copper layer is found to improve the self-discharge characteristics.
ISSN:0013-4651
1945-7111
DOI:10.1149/1.2096920