Activity and Stability of (Pr1-xNdx)(2)NiO4 as Cathodes for Solid Oxide Fuel Cells III. Crystal Structure, Electrical Properties, and Microstructural Analysis

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	Activity and Stability of (Pr1-xNdx)(2)NiO4 as Cathodes for Solid Oxide Fuel Cells III. Crystal Structure, Electrical Properties, and Microstructural Analysis
	Guan, Wanbing; Zhou, Xiao-Dong; Dogdibegovic, Emir; Cai, Qingsheng; Alabri, Nawf S.
刊名	JOURNAL OF THE ELECTROCHEMICAL SOCIETY
	2017
卷号	164 期号:2 页码:F99-F106
ISSN号	0013-4651
英文摘要	This study is to complement an early article (Dogdibegovic et al., J. Electrochem. Soc., 163(13), F1344 (2016)) on the electrochemical activity and performance stability of (Pr1-xNdx)(2)NiO4+delta (PNNO) electrodes. Here, we report the crystal structure, electrical properties, and microstructures of PNNO series as the cathodes for solid oxide fuel cells. Rietveld refinements on powders (x = 0, 0.25, 0.50, 0.75, and 1) show that the unit cell volume decreases with an increase in x, primarily due to a decrease in the c lattice parameter. Larger cell volume (similar to 1.50%) and higher total electrical conduction (40%) in Pr2NiO4+delta are in favor with its mixed conducting properties during operation, but Pr2NiO4+delta cathode exhibits a severe phase evolution. Substitution of Pr with Nd shows the suppression of phase evolution in both thermally annealed powders and electrodes. An increase in Nd content leads to a full preservation of the parent phase in both (Pr0.25Nd0.75)(2)NiO4+delta and Nd2NiO4 after 2,500 hour annealing at elevated temperatures. Reaction with GDC buffer layer was also suppressed with the presence of Nd, which was shown by a reduction of Pr and Ni elemental diffusion into GDC bulk. STEM analysis confirms multiple phases present in an operated Pr2NiO4+delta electrode, while suppressed phase transition was observed in electrodes with high Nd content. (c) 2016 The Electrochemical Society.
公开日期	2017-12-25
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/14052]
专题	2017专题
推荐引用方式 GB/T 7714	Guan, Wanbing,Zhou, Xiao-Dong,Dogdibegovic, Emir,et al. Activity and Stability of (Pr1-xNdx)(2)NiO4 as Cathodes for Solid Oxide Fuel Cells III. Crystal Structure, Electrical Properties, and Microstructural Analysis[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY,2017,164(2):F99-F106.
APA	Guan, Wanbing,Zhou, Xiao-Dong,Dogdibegovic, Emir,Cai, Qingsheng,&Alabri, Nawf S..(2017).Activity and Stability of (Pr1-xNdx)(2)NiO4 as Cathodes for Solid Oxide Fuel Cells III. Crystal Structure, Electrical Properties, and Microstructural Analysis.JOURNAL OF THE ELECTROCHEMICAL SOCIETY,164(2),F99-F106.
MLA	Guan, Wanbing,et al."Activity and Stability of (Pr1-xNdx)(2)NiO4 as Cathodes for Solid Oxide Fuel Cells III. Crystal Structure, Electrical Properties, and Microstructural Analysis".JOURNAL OF THE ELECTROCHEMICAL SOCIETY 164.2(2017):F99-F106.