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Author O.`Grady, W. E. ♦ Swider, K. E. ♦ Pandya, K. I. ♦ Corrigan, D. A.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword ENERGY STORAGE ♦ METAL-METAL OXIDE BATTERIES ♦ ELECTRODES ♦ NICKEL ♦ VALENCE ♦ NICKEL OXIDES ♦ PHASE STUDIES ♦ BARIUM COMPOUNDS ♦ NICKELATES ♦ ABSORPTION SPECTROSCOPY ♦ X-RAY SPECTROSCOPY
Abstract The oxidation state of nickel in a nickel oxide battery has been examined using X-ray absorption spectroscopy. Chemically synthesized {beta}-NiOOH and BaNiO{sub 3} were used as reference standards for the Ni(III) and Ni(IV) oxidation states of nickel, respectively. The shift of the Ni K-edge absorption in both a completely charged nickel oxide electrode (NOE) and a 1,000% overcharged nickel oxide electrode corresponds to a Ni oxidation state of +3.5. This oxidation state clearly indicates the presence of Ni{sup +4} in the charged electrodes.
ISSN 00134651
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-05-01
Publisher Department Brookhaven National Laboratory (BNL), Upton, NY
Publisher Place United States
Journal Journal of the Electrochemical Society
Volume Number 143
Issue Number 5
Organization Brookhaven National Laboratory (BNL), Upton, NY


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