Self-discharge mechanism of sealed-type nickel/metal-hydride battery
Journal Article
·
· Journal of the Electrochemical Society
- Matsushita Battery Industrial Co., Ltd., Osaka (Japan)
- Univ. of Osaka Prefecture, Sakai, Osaka (Japan). Dept. of Applied Chemistry
Factors affecting the self-discharge rate of a nickel/metal-hydride (Ni-MH) battery, generally much higher than that of nickel/cadmium (Ni-Cd) battery, are investigated, and the self-discharge mechanism is discussed. Ammonia and amine participate in the shuttle reaction like nitrate ion in the Ni-Cd battery, resulting in acceleration of the self-discharge. When nonwoven fabric made of sulfonated-polypropylene is used as a separator instead of conventional polyamide separator, the self-discharge rate of the Ni-MH battery is strongly depressed, to the same level as that of Ni-Cd battery.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 276645
- Journal Information:
- Journal of the Electrochemical Society, Vol. 143, Issue 6; Other Information: PBD: Jun 1996
- Country of Publication:
- United States
- Language:
- English
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