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; Zeng, J
2017
发表期刊JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
ISSN0002-7863
卷号139期号:24页码:8152-8159
文章类型期刊论文
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.
关键词Electrocatalytic Properties Platinum Nanoparticles Strain Control Fuel-cells Pt-skin Catalysts Surfaces Nanocrystals Nanoframes Stability
DOI10.1021/jacs.7b01036
关键词[WOS]ELECTROCATALYTIC PROPERTIES ; PLATINUM NANOPARTICLES ; STRAIN CONTROL ; FUEL-CELLS ; PT-SKIN ; CATALYSTS ; SURFACES ; NANOCRYSTALS ; NANOFRAMES ; STABILITY
收录类别SCI
语种英语
WOS记录号WOS:000404090100024
引用统计
被引频次:27[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/28549
专题中科院上海应用物理研究所2011-2018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.
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