Shape-Dependent Activity of Ceria for Hydrogen Electro-Oxidation in Reduced-Temperature Solid Oxide Fuel Cells

CAS OpenIR > 中科院上海应用物理研究所2011-2018年

	Shape-Dependent Activity of Ceria for Hydrogen Electro-Oxidation in Reduced-Temperature Solid Oxide Fuel Cells
	Tong, XF; Luo, T; Meng, X; Wu, H; Li, JL; Liu, XJ; Ji, XN; Wang, JQ; Chen, CS; Zhan, ZL; Wang, JQ (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, 239 Zhangheng Rd, Shanghai 201204, Peoples R China.
	2015
发表期刊	SMALL
ISSN	1613-6810
卷号	11 期号:41 页码:5581—5588
文章类型	期刊文献
摘要	Single crystalline ceria nanooctahedra, nanocubes, and nanorods are hydrothermally synthesized, colloidally impregnated into the porous La0.9Sr0.1Ga0.8Mg0.2O3- (LSGM) scaffolds, and electrochemically evaluated as the anode catalysts for reduced temperature solid oxide fuel cells (SOFCs). Well-defined surface terminations are confirmed by the high-resolution transmission electron microscopy (111) for nanooctahedra, (100) for nanocubes, and both (110) and (100) for nanorods. Temperature-programmed reduction in H-2 shows the highest reducibility for nanorods, followed sequentially by nanocubes and nanooctahedra. Measurements of the anode polarization resistances and the fuel cell power densities reveal different orders of activity of ceria nanocrystals at high and low temperatures for hydrogen electro-oxidation, i.e., nanorods > nanocubes > nanooctahedra at T 450 degrees C and nanooctahedra > nanorods > nanocubes at T 500 degrees C. Such shape-dependent activities of these ceria nanocrystals have been correlated to their difference in the local structure distortions and thus in the reducibility. These findings will open up a new strategy for design of advanced catalysts for reduced-temperature SOFCs by elaborately engineering the shape of nanocrystals and thus selectively exposing the crystal facets.
关键词	Defined Surface Planes Gas Shift Reaction Catalyzed Soot Oxidation Ceo2 Nanocrystals Co Oxidation Anode Materials Oxygen Storage Sofc Anodes Adsorption Nanorods
语种	英语
WOS记录号	WOS:000363593600016
引用统计
文献类型	期刊论文
条目标识符	http://ir.sinap.ac.cn/handle/331007/25038
专题	中科院上海应用物理研究所2011-2018年
通讯作者	Wang, JQ (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, 239 Zhangheng Rd, Shanghai 201204, Peoples R China.
推荐引用方式 GB/T 7714	Tong, XF,Luo, T,Meng, X,et al. Shape-Dependent Activity of Ceria for Hydrogen Electro-Oxidation in Reduced-Temperature Solid Oxide Fuel Cells[J]. SMALL,2015,11(41):5581—5588.
APA	Tong, XF.,Luo, T.,Meng, X.,Wu, H.,Li, JL.,...&Wang, JQ .(2015).Shape-Dependent Activity of Ceria for Hydrogen Electro-Oxidation in Reduced-Temperature Solid Oxide Fuel Cells.SMALL,11(41),5581—5588.
MLA	Tong, XF,et al."Shape-Dependent Activity of Ceria for Hydrogen Electro-Oxidation in Reduced-Temperature Solid Oxide Fuel Cells".SMALL 11.41(2015):5581—5588.

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