Quantitative Characterization of SOFC Nickel-YSZ Anode Microstructure Degradation Based on Focused-Ion-Beam 3D-Reconstruction Technique

被引：78

作者：

Jiao, Zhenjun ^{[1
]}

Shikazono, Naoki ^{[1
]}

Kasagi, Nobuhide ^{[2
]}

机构：

[1] Univ Tokyo, Inst Ind Sci, Tokyo 1538505, Japan

[2] Univ Tokyo, Dept Mech Engn, Tokyo 1138656, Japan

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2012年 / 159卷 / 03期

关键词：

FUEL-CELL ANODE; NIO; TRANSFORMATION; TEMPERATURE; PERFORMANCE; STABILITY; CATALYSTS; ELECTRODE; STEAM;

D O I：

10.1149/2.045203jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The anode microstructural evolution is correlated to its electrochemical characteristics during a long time discharge for conventional nickel-yttria-stabilized zirconia composite anode. Self made anode performance degraded with operation time in humidified hydrogen, with the increases of both ohmic and polarization losses. The anode samples after different discharging times were analysized by 3-dimensional microstructure reconstruction based on focused ion beam-scanning electron microscopy technique. Nickel connectivity, nickel-yttria-stabilized zirconia interface area and the active three-phases-boundary length were correlated to the anode degradation. The influences of bulk gas humidity and current density were also investigated to reveal their contributions to the anode degradation. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.045203jes] All rights reserved.

引用

页码：B285 / B291

页数：7

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