Zinc-substituted {alpha}-nickel hydroxide as an electrode material for alkaline secondary cells
Journal Article
·
· Journal of the Electrochemical Society
- Bangalore Univ. (India). Dept. of Chemistry
- Indian Inst. of Science, Bangalore (India). Solid State and Structural Chemistry Unit
Double hydroxides of the formula Ni{sub 1{minus}x}Zn{sub 2x} (OH){sub 2}(CO{sub 3}){sub x}{center_dot}nH{sub 2}O (x = 0.1 to 0.25) having the same structure as that of {alpha}-nickel hydroxide have been synthesized by partial substitution of zinc for nickel. The hydroxide having the composition x = 0.25 exhibited prolonged stability in 6 M KOH. Pasted electrodes comprising this material are rechargeable with a stabilized reversible discharge capacity of 410 {+-} 15 mAh/g of nickel even under suboptimal conditions of electrode fabrication. This compares favorably with the capacity values achieved for {beta}-nickel hydroxide (221 mAh/g, this work; 297 mAh/g, Delahaye-Vidal and Figlarz; 456 mAh/g, theoretical).
- OSTI ID:
- 321132
- Journal Information:
- Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 1 Vol. 146; ISSN 0013-4651; ISSN JESOAN
- Country of Publication:
- United States
- Language:
- English
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