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Publication Citation: Multi-Scale Microstructure Characterization of Solid Oxide Fuel Cell Assemblies with Ultra Small-Angle X-Ray Scattering

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Author(s): Andrew J. Allen; Jan Ilavsky; Artur Braun;
Title: Multi-Scale Microstructure Characterization of Solid Oxide Fuel Cell Assemblies with Ultra Small-Angle X-Ray Scattering
Published: June 11, 2009
Abstract: The structure of three solid oxide fuel cell assemblies with 200 micrometers nominal thick-ness in the transverse plane, before and after operation, and with and without sulfur con-taining fuel, is quantified with ultra small angle x-ray scattering (USAXS). Thin sections of 80 micrometers thickness in the coronal direction were cut in order to have sufficient X-ray transmission at the 16.9 keV X-ray energy used. USAXS curves for 0.001 nm-1 < q < 5 nm-1 were recorded in steps of 15 micrometers at positions across the coronal plane. The USAXS curves were analyzed to determine the solid/void microstructure over the scale range from 1 nm to 3 micrometers. Distinct micro- and meso-structural differences were revealed between the pristine reference cell assembly and the two operated cells.
Citation: Advanced Engineering Materials
Volume: 11
Issue: 6
Pages: pp. 495 - 501
Keywords: microstructure characterization; solid oxide fuel cells; small-angle X-ray scattering; sintering
Research Areas: Ceramics