Electrochemical studies on LaNi{sub 5{minus}x}Sn{sub x} metal hydride alloys
- Jet Propulsion Lab., Pasadena, CA (United States). Electrochemical Technologies Group
- California Inst. of Technology, Pasadena, CA (United States). Div. of Engineering and Applied Science
Electrochemical studies were performed on LaNi{sub 5{minus}x}Sn{sub x} with 0 {le} x {le} 0.5. The authors measured the effect of the Sn substituent on the kinetics of charge-transfer and diffusion during hydrogen absorption and desorption, and the cyclic lifetimes of LaNi{sub 5{minus}x}Sn{sub x} electrodes in 250 mAh laboratory test cells. They report beneficial effects of making small substitutions of Sn for Ni in LaNi{sub 5} on the performance of the metal hydride alloy anode in terms of cyclic lifetime, capacity, and kinetics. The optimal concentration of Sn in LaNi{sub 5{minus}x}Sn{sub x} alloys for negative electrodes in alkaline rechargeable secondary cells was found to lie in the range 0.25 {le} x {le} 0.3.
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FG03-94ER14493
- OSTI ID:
- 413410
- Journal Information:
- Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 8 Vol. 143; ISSN 0013-4651; ISSN JESOAN
- Country of Publication:
- United States
- Language:
- English
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