Quantitative analysis of micro structural and conductivity evolution of Ni-YSZ anodes during thermal cycling based on nano-computed tomography

被引：55

作者：

Guan, Yong ^{[2
,3
]}

Gong, Yunhui ^{[1
]}

Li, Wenjie ^{[2
,3
]}

Gelb, Jeff ^{[4
]}

Zhang, Lei

Liu, Gang ^{[2
,3
]}

Zhang, Xiaobo ^{[2
,3
]}

Song, Xiangxia ^{[2
,3
]}

Xia, Changrong

Xiong, Ying ^{[2
,3
]}

Wang, Haiqian ^{[1
]}

Wu, Ziyu ^{[2
,3
]}

Tian, Yangchao ^{[2
,3
]}

机构：

[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China

[2] Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230029, Anhui, Peoples R China

[3] Univ Sci & Technol China, Sch Nucl Sci & Technol, Hefei 230029, Anhui, Peoples R China

[4] Xradia Inc, Pleasanton, CA 94588 USA

来源：

JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 24期

基金：

中国国家自然科学基金;

关键词：

Anode; Thermal cycles; Ni agglomeration; Microstructure evolution; Nano-computed tomography; 3-DIMENSIONAL RECONSTRUCTION; SOFC; DEGRADATION; MICROSTRUCTURE; MECHANISMS; ELECTRODES; RESOLUTION; CERMET;

D O I：

10.1016/j.jpowsour.2011.08.083

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Understanding the mechanism of degradation in solid oxide fuel cells (SOFCs) using nickel/yttria-stabilized zirconia (Ni-YSZ) as the anode material is very important for the optimization of cell performance. In this work, the effects of thermal cycling on the microstructure of the Ni-YSZ anode are explored using the three-dimensional X-ray nano computed tomography (nano-CT) imaging technique. It is found that the average Ni particle size increased with thermal cycling, which is associated with the decreased connectivity of the Ni phase and the three-phase-boundary (TPB) length. Moreover, the conductivities of the anode samples are also reduced with the increase in thermal cycle times. The implication of these observations is discussed in terms of the relationship between the conductivity and connectivity of the Ni phase. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：10601 / 10605

页数：5

共 36 条

[1] Soft X-ray microscopy at a spatial resolution better than 15nm [J].

Chao, WL ;

Harteneck, BD ;

Liddle, JA ;

Anderson, EH ;

Attwood, DT .

NATURE, 2005, 435 (7046) :1210-1213

[2] Three-dimensional imaging of a complex concaved cuboctahedron copper sulfide crystal by x-ray nanotomography [J].

Chen, Jie ;

Wu, Chunyan ;

Tian, Jinping ;

Li, Wenjie ;

Yu, Shuhong ;

Tian, Yangchao .

APPLIED PHYSICS LETTERS, 2008, 92 (23)

[3] Hard-x-ray microscopy with Fresnel zone plates reaches 40 nm Rayleigh resolution [J].

Chu, Y. S. ;

Yi, J. M. ;

De Carlo, F. ;

Shen, Q. ;

Lee, Wah-Keat ;

Wu, H. J. ;

Wang, C. L. ;

Wang, J. Y. ;

Liu, C. J. ;

Wang, C. H. ;

Wu, S. R. ;

Chien, C. C. ;

Hwu, Y. ;

Tkachuk, A. ;

Yun, W. ;

Feser, M. ;

Liang, K. S. ;

Yang, C. S. ;

Je, J. H. ;

Margaritondo, G. .

APPLIED PHYSICS LETTERS, 2008, 92 (10)

[4] Nickel-Zirconia Anode Degradation and Triple Phase Boundary Quantification from Microstructural Analysis [J].

Faes, A. ;

Hessler-Wyser, A. ;

Presvytes, D. ;

Vayenas, C. G. ;

Van Herle, J. .

FUEL CELLS, 2009, 9 (06) :841-851

[5] Performance Degradation of Microtubular SOFCs Operating in the Intermediate-Temperature Range [J].

Galloway, Kevin V. ;

Sammes, Nigel M. .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2009, 156 (04) :B526-B531

[6] Three-dimensional reconstruction of porous LSCF cathodes [J].

Gostovic, D. ;

Smith, J. R. ;

Kundinger, D. P. ;

Jones, K. S. ;

Wachsman, E. D. .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2007, 10 (12) :B214-B217

[7] Nondestructive Nanoscale 3D Elemental Mapping and Analysis of a Solid Oxide Fuel Cell Anode [J].

Grew, Kyle N. ;

Chu, Yong S. ;

Yi, Jaemock ;

Peracchio, Aldo A. ;

Izzo, John R., Jr. ;

Hwu, Yeukuang ;

De Carlo, Francesco ;

Chiu, Wilson K. S. .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2010, 157 (06) :B783-B792

[8] Analysis of the three-dimensional microstructure of a solid-oxide fuel cell anode using nano X-ray tomography [J].

Guan, Yong ;

Li, Wenjie ;

Gong, Yunhui ;

Liu, Gang ;

Zhang, Xiaobo ;

Chen, Jie ;

Gelb, Jeff ;

Yun, Wenbing ;

Xiong, Ying ;

Tian, Yangchao ;

Wang, Haiqian .

JOURNAL OF POWER SOURCES, 2011, 196 (04) :1915-1919

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

Guan, Yong ;

Li, Wenjie ;

Gong, Yunhui ;

Liu, Gang ;

Gelb, Jeff ;

Zhang, Xiaobo ;

Xiong, Ying ;

Tian, Yangchao ;

Wang, Haiqian .

JOURNAL OF SYNCHROTRON RADIATION, 2010, 17 :782-785

[10] Fabrication of NiO/YSZ anode material for SOFC via mixed NiO precursors [J].

Han, Kyoung R. ;

Jeong, Younji ;

Lee, Haiwon ;

Kim, Chang-Sam .

MATERIALS LETTERS, 2007, 61 (4-5) :1242-1245

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