Observing the microstructural evolution of Ni-Yttria-stabilized zirconia solid oxide fuel cell anodes

David Kennouche; Yu Chen Karen Chen-Wiegart; Kyle J. Yakal-Kremski; Jun Wang; John W. Gibbs; Peter W. Voorhees; Scott A. Barnett

doi:10.1016/j.actamat.2015.09.055

Observing the microstructural evolution of Ni-Yttria-stabilized zirconia solid oxide fuel cell anodes

David Kennouche, Yu Chen Karen Chen-Wiegart, Kyle J. Yakal-Kremski, Jun Wang, John W. Gibbs, Peter W. Voorhees, Scott A. Barnett^*

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

49 Scopus citations

Abstract

This report describes a transmission X-ray microscopy observation of the high-temperature microstructural evolution of a solid oxide fuel cell Ni-Yttria-stabilized zirconia (Ni-YSZ) anode. Unlike prior studies that compared microstructural differences between different anodes, this three-dimensional measurement directly shows the changes occurring in the same region of an anode, enabling a new understanding of evolutionary processes. High-temperature ageing for 48 h at 1050 °C yielded substantial structural changes in the Ni, YSZ and pore networks, including coalescence of Ni particles, leading to a three-fold decrease in three phase boundary length. Implications for fuel cell long-term degradation are discussed.

Original language	English (US)
Pages (from-to)	204-210
Number of pages	7
Journal	Acta Materialia
Volume	103
DOIs	https://doi.org/10.1016/j.actamat.2015.09.055
State	Published - Jan 15 2016

Funding

DK, KYK, and SB gratefully acknowledge financial support from the Department of Energy Basic Energy Science program (Grant # DE-FG02-05ER46255 ) for the sample preparation and imaging work, while JG and PV acknowledge support from the National Science Foundation under grant Number DMR-0907639 for image analysis. JG acknowledges support from the DOE NNSA Stewardship Science Graduate Fellowship under grant DE-FC52-08NA28752 . This work made use of the EPIC facility (NU ANCE Center-Northwestern University), which has received support from the MRSEC program ( NSF DMR-1121262 ) at the Materials Research Center; the International Institute for Nanotechnology (IIN) ; and the State of Illinois , through the IIN. Use of the National Synchrotron Light Source, Brookhaven National Laboratory, was supported by the U.S. Department of Energy, Office of Science, and Office of Basic Energy Sciences , under Contract No. DE-AC02-98CH10886 .

Keywords

Anodes
Degradation
Ni-YSZ
Solid oxide fuel cell
X-ray tomography

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Polymers and Plastics
Metals and Alloys

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10.1016/j.actamat.2015.09.055

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title = "Observing the microstructural evolution of Ni-Yttria-stabilized zirconia solid oxide fuel cell anodes",

abstract = "This report describes a transmission X-ray microscopy observation of the high-temperature microstructural evolution of a solid oxide fuel cell Ni-Yttria-stabilized zirconia (Ni-YSZ) anode. Unlike prior studies that compared microstructural differences between different anodes, this three-dimensional measurement directly shows the changes occurring in the same region of an anode, enabling a new understanding of evolutionary processes. High-temperature ageing for 48 h at 1050 °C yielded substantial structural changes in the Ni, YSZ and pore networks, including coalescence of Ni particles, leading to a three-fold decrease in three phase boundary length. Implications for fuel cell long-term degradation are discussed.",

keywords = "Anodes, Degradation, Ni-YSZ, Solid oxide fuel cell, X-ray tomography",

author = "David Kennouche and Chen-Wiegart, {Yu Chen Karen} and Yakal-Kremski, {Kyle J.} and Jun Wang and Gibbs, {John W.} and Voorhees, {Peter W.} and Barnett, {Scott A.}",

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T1 - Observing the microstructural evolution of Ni-Yttria-stabilized zirconia solid oxide fuel cell anodes

AU - Kennouche, David

AU - Chen-Wiegart, Yu Chen Karen

AU - Yakal-Kremski, Kyle J.

AU - Wang, Jun

AU - Gibbs, John W.

AU - Voorhees, Peter W.

AU - Barnett, Scott A.

PY - 2016/1/15

Y1 - 2016/1/15

N2 - This report describes a transmission X-ray microscopy observation of the high-temperature microstructural evolution of a solid oxide fuel cell Ni-Yttria-stabilized zirconia (Ni-YSZ) anode. Unlike prior studies that compared microstructural differences between different anodes, this three-dimensional measurement directly shows the changes occurring in the same region of an anode, enabling a new understanding of evolutionary processes. High-temperature ageing for 48 h at 1050 °C yielded substantial structural changes in the Ni, YSZ and pore networks, including coalescence of Ni particles, leading to a three-fold decrease in three phase boundary length. Implications for fuel cell long-term degradation are discussed.

AB - This report describes a transmission X-ray microscopy observation of the high-temperature microstructural evolution of a solid oxide fuel cell Ni-Yttria-stabilized zirconia (Ni-YSZ) anode. Unlike prior studies that compared microstructural differences between different anodes, this three-dimensional measurement directly shows the changes occurring in the same region of an anode, enabling a new understanding of evolutionary processes. High-temperature ageing for 48 h at 1050 °C yielded substantial structural changes in the Ni, YSZ and pore networks, including coalescence of Ni particles, leading to a three-fold decrease in three phase boundary length. Implications for fuel cell long-term degradation are discussed.

KW - Anodes

KW - Degradation

KW - Ni-YSZ

KW - Solid oxide fuel cell

KW - X-ray tomography

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Observing the microstructural evolution of Ni-Yttria-stabilized zirconia solid oxide fuel cell anodes

Abstract

Funding

Keywords

ASJC Scopus subject areas

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