Quantitative Characterization of SOFC Nickel-YSZ Anode Microstructure Degradation Based on Focused-Ion-Beam 3D-Reconstruction Technique
Quantitative Characterization of SOFC Nickel-YSZ Anode Microstructure Degradation Based on Focused-Ion-Beam 3D-Reconstruction Technique
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DOI：
10.1149/2.045203jes
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发表时间：
2012
影响因子：
3.9
通讯作者：
Z. Jiao;N. Shikazono;N. Kasagi
中科院分区：
文献类型：
--
作者：
Z. Jiao;N. Shikazono;N. Kasagi
Theanodemicrostructuralevolutioniscorrelatedtoitselectrochemicalcharacteristics duringalongtimedischargeforconventionalnickel-yttria-stabilizedzirconiacompositeanode.Selfmadeanodeperformancedegradedwithoperationtimeinhumidifiedhydrogen，随欧姆损耗和偏振损耗的增加而增加。用3-dimensionalmicrostructurereconstructionbasedonfocusedionbeam-scanningelectronmicroscopytechnique.Nickelconnectivity，分析了不同放电时间后的阳极样品的NiY稳定氧化锆界面区，并将活性三相晶界长度与阳极degradation.Theinfluencesofbulkgashumidityandcurrentdensitywerealsoinvestigatedtorevealtheircontributionstotheanodedegradation.©2012进行了关联。[DOI：10.1149/2.045203 jes]保留所有权利。2011年10月25日提交的手稿；2011年11月30日收到的修订手稿。2012年1月3日出版。
Theanodemicrostructuralevolutioniscorrelatedtoitselectrochemicalcharacteristics duringalongtimedischargeforconventionalnickel-yttria-stabilizedzirconiacompositeanode.Selfmadeanodeperformancedegradedwithoperationtimeinhumidifiedhydrogen,with the increases of both ohmic and polarization losses. The anode samples after different discharging times were analysized by 3-dimensionalmicrostructurereconstructionbasedonfocusedionbeam-scanningelectronmicroscopytechnique.Nickelconnectivity,nickel-yttria-stabilized zirconia interface area and the active three-phases-boundary length were correlated to the anode degradation.Theinfluencesofbulkgashumidityandcurrentdensitywerealsoinvestigatedtorevealtheircontributionstotheanodedegradation.©2012 The Electrochemical Society. [DOI: 10.1149/2.045203jes] All rights reserved.Manuscript submitted October 25, 2011; revised manuscript received November 30, 2011. Published January 3, 2012.