TY - JOUR
T1 - 3D Non-destructive morphological analysis of a solid oxide fuel cell anode using full-field X-ray nano-tomography
AU - Karen Chen-Wiegart, Yu Chen
AU - Cronin, J. Scott
AU - Yuan, Qingxi
AU - Yakal-Kremski, Kyle J.
AU - Barnett, Scott A.
AU - Wang, Jun
N1 - Funding Information:
We thank Dr. Fernando Camino (BNL) and Dr. Can Erdonmez (BNL) for assisting the development of the sample preparation procedure using FIB/SEM. Research carried out in part at the Center for Functional Nanomaterials, Brookhaven National Laboratory, which is supported by the U.S. Department of Energy, Office of Basic Energy Sciences, under Contract No. DE-AC02-98CH10886. We are grateful that Prof. Eric Maire provided us with the ImageJ plug-in for tortuosity calculations. Use of the National Synchrotron Light Source, Brookhaven National Laboratory, was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-98CH10886.
PY - 2012/11/15
Y1 - 2012/11/15
N2 - An accurate 3D morphological analysis is critically needed to study the process-structure-property relationship in many application fields such as battery electrodes, fuel cells and porous materials for sensing and actuating. Here we present the application of a newly developed full field X-ray nano-scale transmission microscopy (TXM) imaging for a non-destructive, comprehensive 3D morphology analysis of a porous Ni-YSZ solid oxide fuel cell anode. A unique combination of improved 3D resolution and large analyzed volume (∼3600 μm 3) yields structural data with excellent statistical accuracy. 3D morphological parameters quantified include phase volume fractions, surface and interfacial area densities, phase size distribution, directional connectivity, tortuosity, and electrochemically active triple phase boundary density. A prediction of electrochemical anode polarization resistance based on this microstructural data yielded good agreement with a measured anode resistance via electrochemical impedance spectroscopy. The Mclachlan model is used to estimate the anode electrical conductivity.
AB - An accurate 3D morphological analysis is critically needed to study the process-structure-property relationship in many application fields such as battery electrodes, fuel cells and porous materials for sensing and actuating. Here we present the application of a newly developed full field X-ray nano-scale transmission microscopy (TXM) imaging for a non-destructive, comprehensive 3D morphology analysis of a porous Ni-YSZ solid oxide fuel cell anode. A unique combination of improved 3D resolution and large analyzed volume (∼3600 μm 3) yields structural data with excellent statistical accuracy. 3D morphological parameters quantified include phase volume fractions, surface and interfacial area densities, phase size distribution, directional connectivity, tortuosity, and electrochemically active triple phase boundary density. A prediction of electrochemical anode polarization resistance based on this microstructural data yielded good agreement with a measured anode resistance via electrochemical impedance spectroscopy. The Mclachlan model is used to estimate the anode electrical conductivity.
KW - 3D analysis
KW - Electrochemical impedance spectroscopy
KW - Nano-tomography and computed tomography
KW - Solid oxide fuel cell
KW - Transmission X-ray microscopy
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U2 - 10.1016/j.jpowsour.2012.06.097
DO - 10.1016/j.jpowsour.2012.06.097
M3 - Article
AN - SCOPUS:84864802405
SN - 0378-7753
VL - 218
SP - 348
EP - 351
JO - Journal of Power Sources
JF - Journal of Power Sources
ER -
