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Author Vogt, T. ♦ Reilly, J. J. ♦ Johnson, J. R. ♦ Adzic, G. D. ♦ McBreen, J.
Sponsorship USDOE, Washington, DC (United States) ♦ National Inst. of Standards and Technology, Gaithersburg, MD (United States)
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ ENERGY STORAGE ♦ HYDROGEN FUEL ♦ NICKEL-HYDROGEN BATTERIES ♦ HYDROGEN STORAGE ♦ LANTHANUM ALLOYS ♦ NICKEL ALLOYS ♦ COBALT ALLOYS ♦ MANGANESE ALLOYS ♦ ALUMINIUM ALLOYS ♦ DEUTERIUM ♦ MICROSTRUCTURE
Abstract The site preference of cobalt and deuterium in the charged and discharged state of a commercial-type metal hydride anode was investigated by high resolution neutron powder diffraction using an alloy with an altered isotope composition. In the alloy La({sup 58}Ni{sub 0.376} {sup 62}Ni{sub 0.624}){sub 3.55}Co{sub 0.75}Mn{sub 0.33}Al{sub 0.30} the isotope ratio of {sup 58}Ni to {sup 62}Ni leads to a zero neutron scattering length for nickel. Rietveld refinement revealed that Al and Mn occupy the midplane 3g sites of the CaCu{sub 5} structure, while cobalt has a preference for 3g but also occupies the basal plane 2c sites. The space group of the deuteride remains P6/mmm which differs from the parent LaNi{sub 5}D{sub 7} which is P6{sub 3}mc.
ISSN 00134651
Educational Use Research
Learning Resource Type Article
Publisher Date 1999-01-01
Publisher Department Brookhaven National Laboratory (BNL), Upton, NY
Publisher Place United States
Journal Journal of the Electrochemical Society
Volume Number 146
Issue Number 1
Organization Brookhaven National Laboratory (BNL), Upton, NY


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