Extended X-ray absorption fine structure investigations of nickel hydroxides
- Case Western Reserve Univ., Cleveland, OH (USA)
- Naval Research Laboratory, Washington, DC (USA)
- General Motors Research Laboratories, Warren, MI (USA)
- Brookhaven National Laboratory, Upton, NY (USA)
The extended X-ray absorption fine structure (EXAFS) technique was used to investigate the structures of {alpha}-Ni(OH){sub 2} and {beta}-Ni(OH){sub 2} samples at room temperature and at liquid nitrogen temperature. The EXAFS data for {beta}-Ni(OH){sub 2} were analyzed by using the reference phase and amplitude functions derived from the NiO and Ni foil EXAFS spectra. The EXAFS spectra of {alpha}-Ni(OH){sub 2} were analyzed by using NiO as well as {beta}-Ni(OH){sub 2} as the reference compounds. A contraction in the Ni-Ni distance of 0.05 {angstrom} in the lattice of {alpha}-Ni(OH){sub 2} was observed in comparison to {beta}-Ni(OH){sub 2}. Analysis of in situ EXAFS spectra of an {alpha}-Ni(OH){sub 2} film indicated subtle changes upon hydration including an increase in the Ni-O coordination number.
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 6729919
- Journal Information:
- Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 94:1; ISSN 0022-3654; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ABSORPTION SPECTROSCOPY
DATA
DATA ANALYSIS
EXPERIMENTAL DATA
FINE STRUCTURE
HYDROGEN COMPOUNDS
HYDROXIDES
INFORMATION
MEASURING INSTRUMENTS
MEASURING METHODS
NICKEL COMPOUNDS
NICKEL HYDROXIDES
NUMERICAL DATA
OXYGEN COMPOUNDS
SPECTROSCOPY
TRANSITION ELEMENT COMPOUNDS
X-RAY SPECTROSCOPY