In situ X-ray absorption near-edge structure evidence for quadrivalent nickel in nickel battery electrodes

Journal Article · Wed May 01 00:00:00 EDT 1996 · Journal of the Electrochemical Society

DOI:https://doi.org/10.1149/1.1836687· OSTI ID:256816

O`Grady, W E; Swider, K E ^[1]; Pandya, K I ^[2]; Corrigan, D A ^[3]

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1. Naval Research Lab., Washington, DC (United States). Surface Chemistry Branch
2. North Carolina State Univ., Raleigh, NC (United States). Dept. of Physics
3. Ovonic Battery Co., Troy, MI (United States)

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.

• Research Organization: Brookhaven National Laboratory (BNL), Upton, NY
• DOE Contract Number: AS05-80ER10742; AC02-76CH00016
• OSTI ID: 256816
• Journal Information: Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 5 Vol. 143; ISSN 0013-4651; ISSN JESOAN
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
ABSORPTION SPECTROSCOPY
BARIUM COMPOUNDS
ELECTRODES
METAL-METAL OXIDE BATTERIES
NICKEL
NICKEL OXIDES
NICKELATES
PHASE STUDIES
VALENCE
X-RAY SPECTROSCOPY