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.
National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230029, The People's Republic of China.
Yong
Y
Guan
Wenjie
W
Li
Yunhui
Y
Gong
Gang
G
Liu
Jeff
J
Gelb
Xiaobo
X
Zhang
Ying
Y
Xiong
Yangchao
Y
Tian
Haiqian
H
Wang