Three-dimensional mapping of nickel oxidation states using full field x-ray absorption near edge structure nanotomography

Journal Article · Mon Apr 25 00:00:00 EDT 2011 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3574774· OSTI ID:21518408

Nelson, George J; Harris, William M; Izzo, Jr, John R; Grew, Kyle N; Chiu, Wilson K. S. ^[1]; Chu, Yong S ^[2]; Yi, Jaemock ^[3]; Andrews, Joy C; Yijin, Liu; Pianetta, Piero ^[4]

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1. HeteroFoaM Center, a DOE Energy Frontier Research Center, Department of Mechanical Engineering, University of Connecticut, 191 Auditorium Rd., Storrs, Connecticut 06269-3139 (United States)
2. National Synchrotron Light Source II, Brookhaven National Laboratory, Bldg. 703 Upton, New York 11973-5000 (United States)
3. Advanced Photon Source, Argonne National Laboratory, 9700 S. Cass Ave., Bldg. 438-B007 Argonne, Illinois 60439 (United States)
4. Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., MS 69 Menlo Park, California 94025 (United States)

The reduction-oxidation cycling of the nickel-based oxides in composite solid oxide fuel cells and battery electrodes is directly related to cell performance. A greater understanding of nickel redox mechanisms at the microstructural level can be achieved in part using transmission x-ray microscopy (TXM) to explore material oxidation states. X-ray nanotomography combined with x-ray absorption near edge structure (XANES) spectroscopy has been applied to study samples containing distinct regions of nickel and nickel oxide (NiO) compositions. Digitally processed images obtained using TXM demonstrate the three-dimensional chemical mapping and microstructural distribution capabilities of full-field XANES nanotomography.

• OSTI ID: 21518408
• Journal Information: Applied Physics Letters, Vol. 98, Issue 17; Other Information: DOI: 10.1063/1.3574774; (c) 2011 American Institute of Physics; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION
ABSORPTION SPECTROSCOPY
CHEMICAL ANALYSIS
DISTRIBUTION
ELECTROCHEMISTRY
MICROSCOPY
MICROSTRUCTURE
NICKEL
NICKEL OXIDES
OXIDATION
PHOTON TRANSMISSION SCANNING
SOLID OXIDE FUEL CELLS
X RADIATION
X-RAY SPECTROSCOPY
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
DIAGNOSTIC TECHNIQUES
DIRECT ENERGY CONVERTERS
ELECTROCHEMICAL CELLS
ELECTROMAGNETIC RADIATION
ELEMENTS
FUEL CELLS
HIGH-TEMPERATURE FUEL CELLS
IONIZING RADIATIONS
METALS
NICKEL COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
RADIATIONS
SOLID ELECTROLYTE FUEL CELLS
SORPTION
SPECTROSCOPY
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS