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

被引：39

作者：

Kennouche, David ^{[1
]}

Chen-Wiegart, Yu-chen Karen ^{[2
]}

Yakal-Kremski, Kyle J. ^{[1
]}

Wang, Jun ^{[2
]}

Gibbs, John W. ^{[1
]}

Voorhees, Peter W. ^{[1
]}

Barnett, Scott A. ^{[1
]}

机构：

[1] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA

[2] Brookhaven Natl Lab, Natl Synchrotron Light Source 2, Upton, NY 11973 USA

来源：

ACTA MATERIALIA | 2016年 / 103卷

基金：

美国国家科学基金会;

关键词：

Solid oxide fuel cell; X-ray tomography; Anodes; Ni-YSZ; Degradation; RAY COMPUTED-TOMOGRAPHY; ENERGY; RECONSTRUCTION; DEGRADATION; TEMPERATURE; SIMULATION; RESOLUTION; GROWTH;

D O I：

10.1016/j.actamat.2015.09.055

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 degrees 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. (c) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：204 / 210

页数：7

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