Achieving Remarkable Activity and Durability toward Oxygen Reduction Reaction Based on Ultrathin Rh-Doped Pt Nanowires

doi:10.1021/jacs.7b01036

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Achieving Remarkable Activity and Durability toward Oxygen Reduction Reaction Based on Ultrathin Rh-Doped Pt Nanowires
	Huang, HW; Li, K; Chen, Z; Luo, LH; Gu, YQ; Zhang, DY; Ma, C; Si, R; Yang, JL; Peng, ZM
刊名	JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
	2017
卷号	139 期号:24 页码:8152-8159
关键词	Electrocatalytic Properties Platinum Nanoparticles Strain Control Fuel-cells Pt-skin Catalysts Surfaces Nanocrystals Nanoframes Stability
ISSN号	0002-7863
DOI	10.1021/jacs.7b01036
文献子类	期刊论文
英文摘要	The research of active and sustainable electrocatalysts toward oxygen reduction reaction (ORR) is of great importance for industrial application of fuel cells. Here, we report a remarkable ORR catalyst with both excellent mass activity and durability based on sub 2 nm thick Rh-doped Pt nanowires, which combine the merits of high utilization efficiency of Pt atoms, anisotropic one-dimensional nanostructure, and doping of Rh atoms. Compared with commercial Pt/C catalyst, the Rh-doped Pt nanowires/C catalyst shows a 7.8 and 5.4-fold enhancement in mass activity and specific activity, respectively. The combination of extended X-ray absorption fine structure analysis and density functional theory calculations reveals that the compressive strain and ligand effect in Rh-doped Pt nanowires optimize the adsorption energy of hydroxyl and in turn enhance the specific activity. Moreover, even after 10000 cycles of accelerated durability test in O-2 condition, the Rh-doped. Pt nanowires/C catalyst exhibits a drop of 9.2% in mass activity, against a big decrease of 72.3% for commercial Pt/C. The improved durability can be rationalized by the increased vacancy formation energy of Pt atoms for Rh-doped Pt nanowires.
WOS关键词	ELECTROCATALYTIC PROPERTIES ; PLATINUM NANOPARTICLES ; STRAIN CONTROL ; FUEL-CELLS ; PT-SKIN ; CATALYSTS ; SURFACES ; NANOCRYSTALS ; NANOFRAMES ; STABILITY
语种	英语
WOS记录号	WOS:000404090100024
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/28549]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
推荐引用方式 GB/T 7714	Huang, HW,Li, K,Chen, Z,et al. Achieving Remarkable Activity and Durability toward Oxygen Reduction Reaction Based on Ultrathin Rh-Doped Pt Nanowires[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2017,139(24):8152-8159.
APA	Huang, HW.,Li, K.,Chen, Z.,Luo, LH.,Gu, YQ.,...&Zeng, J.(2017).Achieving Remarkable Activity and Durability toward Oxygen Reduction Reaction Based on Ultrathin Rh-Doped Pt Nanowires.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,139(24),8152-8159.
MLA	Huang, HW,et al."Achieving Remarkable Activity and Durability toward Oxygen Reduction Reaction Based on Ultrathin Rh-Doped Pt Nanowires".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 139.24(2017):8152-8159.