Control of Architecture in Rhombic Dodecahedral Pt-Ni Nanoframe Electrocatalysts

doi:10.1021/jacs.7b05584

	Control of Architecture in Rhombic Dodecahedral Pt-Ni Nanoframe Electrocatalysts
	Becknell, Nigel 1,2; Son, Yoonkook 1; Kim, Dohyung 3; Li, Dongguo 4; Yu, Yi1,7 ; Niu, Zhiqiang 1; Lei, Teng 1; Sneed, Brian T.5; More, Karren L.5; Markovic, Nenad M.4; Stamenkovic, Vojislav R.4; Yang, Peidong1,2,3,6
	2017-08-30
发表期刊	JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
ISSN	0002-7863
卷号	139 期号:34 页码:11678-11681
发表状态	已发表
DOI	10.1021/jacs.7b05584
摘要	Platinum-based alloys are known to demonstrate advanced properties in electrochemical reactions that are relevant for proton exchange membrane fuel cells and electrolyzers. Further development of Pt alloy electrocatalysts relies on the design of architectures with highly active surfaces and optimized utilization of the expensive elpment, Pt. Here, we show that the three-dimensional Pt anisotropy of Pt-Ni rhombic dodecahedra can be tuned by controlling the ratio between Pt and Ni precursors such that either a completely hollow nanoframe or a new architecture, the excavated nanoframe, can be obtained. The excavated nanoframe showed similar to 10 times higher specific and similar to 6 times higher mass activity for the oxygen reduction reaction than Pt/C, and twice the mass activity of the hollow nanoframe. The high activity is attributed to enhanced Ni content in the near-surface region and the extended two-dimensional sheet structure within the nanoframe that minimizes the number of buried Pt sites.
收录类别	SCI ; EI
语种	英语
资助项目	Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy[DE-AC02-05CH11231]
WOS研究方向	Chemistry
WOS类目	Chemistry, Multidisciplinary
WOS记录号	WOS:000409286000011
出版者	AMER CHEMICAL SOC
EI入藏号	20173604125203
EI主题词	Binary alloys ; Electrocatalysts ; Electrolytic reduction ; Fuel cells ; Nickel ; Nickel alloys ; Platinum ; Proton exchange membrane fuel cells (PEMFC)
EI分类号	Ore Treatment:533.1 ; Precious Metals:547.1 ; Nickel:548.1 ; Nickel Alloys:548.2 ; Fuel Cells:702.2 ; Chemical Agents and Basic Industrial Chemicals:803
WOS关键词	RAY-ABSORPTION SPECTROSCOPY ; OXYGEN REDUCTION ; ALLOY NANOCRYSTALS ; SKIN SURFACES ; NANOPARTICLES ; SEGREGATION
原始文献类型	Article
引用统计
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/4644
专题	物质科学与技术学院_PI研究组_于奕组物质科学与技术学院_特聘教授组_杨培东
通讯作者	Stamenkovic, Vojislav R.; Yang, Peidong
作者单位	1.Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA 2.Lawrence Berkeley Natl Lab, Mat Sci Div, Berkeley, CA 94720 USA 3.Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA 4.Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA 5.Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA 6.Kavli Energy NanoSci Inst, Berkeley, CA 94720 USA 7.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
推荐引用方式 GB/T 7714	Becknell, Nigel,Son, Yoonkook,Kim, Dohyung,et al. Control of Architecture in Rhombic Dodecahedral Pt-Ni Nanoframe Electrocatalysts[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2017,139(34):11678-11681.
APA	Becknell, Nigel.,Son, Yoonkook.,Kim, Dohyung.,Li, Dongguo.,Yu, Yi.,...&Yang, Peidong.(2017).Control of Architecture in Rhombic Dodecahedral Pt-Ni Nanoframe Electrocatalysts.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,139(34),11678-11681.
MLA	Becknell, Nigel,et al."Control of Architecture in Rhombic Dodecahedral Pt-Ni Nanoframe Electrocatalysts".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 139.34(2017):11678-11681.