Erratum: Nondestructive Reconstruction and Analysis of Solid Oxide Fuel Cell Anodes Using X-Ray Computed Tomography at Sub-50 nm Resolution [J. Electrochem. Soc., 155, B504 (2008)]

Abstract

X-ray computed tomography (XCT) is applied to non-destructively image the three-dimensional (3D) microstructure of a solid oxide fuel cell (SOFC) with a solid yttria-stabilized zirconia (YSZ) electrolyte and porous nickel and YSZ (Ni-YSZ) anode. The x-ray microscope uses the 8 keV Cu-K α line from a laboratory x-ray source with a condenser optic lens and an objective Fresnel zone plate lens providing spatial resolution of 42.7 nm. The data is visualized as 3D images and post-processed as binary images to obtain structural parameters. Porosity is calculated using a voxel counting method and tortuosity is evaluated by solving the Laplace equation. The 3D representation of the microstructure is used to calculate true structural and transport parameters and optimization through a detailed mass transfer and electrochemical study. Simulation of multi-component mass transport and electrochemical reactions in the microstructure using XCT data as geometric input illustrates the impact of this technique on SOFC modeling.