Control of Architecture in Rhombic Dodecahedral Pt-Ni Nanoframe Electrocatalysts
Becknell, Nigel1,2; Son, Yoonkook1; Kim, Dohyung3; Li, Dongguo4; Yu, Yi1,7; Niu, Zhiqiang1; Lei, Teng1; Sneed, Brian T.5; More, Karren L.5; Markovic, Nenad M.4; Stamenkovic, Vojislav R.4; Yang, Peidong1,2,3,6
2017-08-30
Source PublicationJOURNAL OF THE AMERICAN CHEMICAL SOCIETY
ISSN0002-7863
Volume139Issue:34Pages:11678-11681
Status已发表
DOI10.1021/jacs.7b05584
AbstractPlatinum-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.
Indexed BySCI ; EI
Language英语
Funding ProjectOffice of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy[DE-AC02-05CH11231]
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000409286000011
PublisherAMER CHEMICAL SOC
EI Accession Number20173604125203
EI KeywordsBinary alloys ; Electrocatalysts ; Electrolytic reduction ; Fuel cells ; Nickel ; Nickel alloys ; Platinum ; Proton exchange membrane fuel cells (PEMFC)
EI Classification NumberOre 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 KeywordRAY-ABSORPTION SPECTROSCOPY ; OXYGEN REDUCTION ; ALLOY NANOCRYSTALS ; SKIN SURFACES ; NANOPARTICLES ; SEGREGATION
Original Document TypeArticle
Citation statistics
Cited Times:128[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttps://kms.shanghaitech.edu.cn/handle/2MSLDSTB/4644
Collection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
Corresponding AuthorStamenkovic, Vojislav R.; Yang, Peidong
Affiliation1.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
Recommended Citation
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.
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