Composition and cycle life of multicomponent AB{sub 5} hydride electrodes
- Brookhaven National Lab., Upton, NY (United States)
- Texas A and M Univ., College Station, TX (United States). Center for Electrochemical Systems and Hydrogen Research
Multicomponent AB{sub 5} hydrides are attractive replacements for the cadmium electrode in nickel -- cadmium batteries. The archetype compound of the AB{sub 5} alloy class is LaNi{sub 5}, but in a typical battery electrode mischmetal is substituted for La and Ni is substituted in part by variety of metals. While the effects of Ni substitution have been widely studied, relatively little effort has focused on the effect of La substitution. This paper deals with the effect on cycle life due to the increasing presence of Ce in the alloy series La{sub 1-x}Ce{sub x}Ni{sub 3.55}Co{sub .75}Mn{sub .4}Al{sub .3}. Alloys were characterized by the determination of pressure-composition relationships, molar volume of H and electrode cycle life. The effects due to lattice expansion are taken into account. It was concluded that the rate of loss of electrochemical capacity per charge/discharge cycle was significantly decreased due to the presence of Ce.
- Research Organization:
- Brookhaven National Lab., Upton, NY (United States); Texas A and M Univ., College Station, TX (United States). Center for Electrochemical Systems and Hydrogen Research
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC02-76CH00016; FG03-93ER14381
- OSTI ID:
- 10193041
- Report Number(s):
- BNL--60533; CONF-941063--10; ON: DE95002172; BR: KC0302040
- Country of Publication:
- United States
- Language:
- English
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