The study of the reconstructed three-dimensional structure of a solid-oxide fuel-cell cathode by X-ray nanotomography.

The microstructure and morphology of solid-oxide fuel-cell electrodes are very complex but important because they strongly affect the electrical performance of the cell. In this work the high-resolution X-ray nanotomography technique is applied to reconstruct the three-dimensional microstructure of a (La(0.8)Sr(0.2))(0.95)MnO(3) yttria-stabilized zirconia composite cathode. Some key microstructural parameters, such as the porosity, representative elementary volume, connected pore volume and pore phase tortuosity, were obtained based on the three-dimensional reconstruction volume data with a spatial resolution of sub-60 nm. These parameters bear intimate correlation with the efficiency of the electrochemical conversion process, and provide valuable information for optimizing the manufacturing processes and improving the device's reliability.

[1]  Piero Pianetta,et al.  Using X-ray microscopy and Hg L3 XANES to study Hg binding in the rhizosphere of Spartina cordgrass. , 2009, Environmental science & technology.

[2]  Figure 4 , 2022 .

[3]  Krishnaswamy Nandakumar,et al.  Geometrical modeling of microstructure of solid oxide fuel cell composite electrodes , 2008 .

[4]  Hongtao Cui,et al.  X-ray computed tomography in Zernike phase contrast mode at 8 keV with 50-nm resolution using Cu rotating anode X-ray source , 2007 .

[5]  Nigel P. Brandon,et al.  X-ray nano computerised tomography of SOFC electrodes using a focused ion beam sample-preparation technique , 2010 .

[6]  Z. Wu,et al.  3D visualization of subcellular structures of Schizosaccharomyces pombe by hard X‐ray tomography , 2010, Journal of microscopy.

[7]  Lin Guo,et al.  Quantitative study of interior nanostructure in hollow zinc oxide particles on the basis of nondestructive x-ray nanotomography , 2009 .

[8]  Ying Xiong,et al.  3D nanoscale imaging of the yeast, Schizosaccharomyces pombe, by full-field transmission X-ray microscopy at 5.4 keV , 2010, Analytical and bioanalytical chemistry.

[9]  Andrea Lanzini,et al.  Microstructural characterization of solid oxide fuel cell electrodes by image analysis technique , 2009 .

[10]  Yangchao Tian,et al.  Three-dimensional imaging of a complex concaved cuboctahedron copper sulfide crystal by x-ray nanotomography , 2008 .

[11]  A. Allen,et al.  Multi‐scale Microstructure Characterization of Solid Oxide Fuel Cell Assemblies With Ultra Small‐Angle X‐Ray Scattering , 2009 .

[12]  Gerry McDermott,et al.  X-ray tomography of whole cells. , 2005, Current opinion in structural biology.

[13]  Weilun Chao,et al.  Demonstration of 12 nm resolution Fresnel zone plate lens based soft x-ray microscopy. , 2009, Optics express.

[14]  Qun Shen,et al.  Full-field hard x-ray microscopy below 30 nm: a challenging nanofabrication achievement , 2008, Nanotechnology.

[15]  Marcio Gameiro,et al.  Quantitative three-dimensional microstructure of a solid oxide fuel cell cathode , 2009 .

[16]  Konstantin Mischaikow,et al.  Three-Dimensional Analysis of Solid Oxide Fuel Cell Ni-YSZ Anode Interconnectivity , 2009, Microscopy and Microanalysis.

[17]  J. Gelb,et al.  High resolution hard x-ray microscope on a second generation synchrotron source. , 2008, The Review of scientific instruments.

[18]  Edward J. Garboczi,et al.  Percolation of phases in a three-dimensional cement paste microstructural model , 1991 .