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Journal article
Highly Crystalline Multimetallic Nanoframes with Three-Dimensional Electrocatalytic Surfaces
Science (American Association for the Advancement of Science), v 343(6177), pp 1339-1343
21 Mar 2014
PMID: 24578531
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Control of structure at the atomic level can precisely and effectively tune catalytic properties of materials, enabling enhancement in both activity and durability. We synthesized a highly active and durable class of electrocatalysts by exploiting the structural evolution of platinum-nickel (Pt-Ni) bimetallic nanocrystals. The starting material, crystalline PtNi3 polyhedra, transforms in solution by interior erosion into Pt3Ni nanoframes with surfaces that offer three-dimensional molecular accessibility. The edges of the Pt-rich PtNi3 polyhedra are maintained in the final Pt3Ni nanoframes. Both the interior and exterior catalytic surfaces of this open-framework structure are composed of the nanosegregated Pt-skin structure, which exhibits enhanced oxygen reduction reaction (ORR) activity. The Pt3Ni nanoframe catalysts achieved a factor of 36 enhancement in mass activity and a factor of 22 enhancement in specific activity, respectively, for this reaction (relative to state-of-the-art platinum-carbon catalysts) during prolonged exposure to reaction conditions.
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Details
- Title
- Highly Crystalline Multimetallic Nanoframes with Three-Dimensional Electrocatalytic Surfaces
- Creators
- Chen Chen - Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USAYijin Kang - Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USAZiyang Huo - Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USAZhongwei Zhu - Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USAWenyu Huang - Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USAHuolin L. Xin - Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USAJoshua D. Snyder - Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USADongguo Li - Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USAJeffrey A. Herron - Univ Wisconsin, Dept Chem & Biol Engn, Madison, WI 53706 USAManos Mavrikakis - Univ Wisconsin, Dept Chem & Biol Engn, Madison, WI 53706 USAMiaofang Chi - Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USAKarren L. More - Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USAYadong Li - Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R ChinaNenad M. Markovic - Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USAGabor A. Somorjai - Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USAPeidong Yang - Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USAVojislav R. Stamenkovic - Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USAOak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
- Publication Details
- Science (American Association for the Advancement of Science), v 343(6177), pp 1339-1343
- Publisher
- Amer Assoc Advancement Science
- Number of pages
- 6
- Grant note
- Scientific User Facilities Division, BES, DOE; United States Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy, Fuel Cell Technologies Program; United States Department of Energy (DOE) DE-AC02-05CH11231; DE-AC02-06CH11357 / U.S. Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences (BES), Materials Sciences and Engineering Division; United States Department of Energy (DOE) DE-FG02-05ER15731 / DOE, Office of Science, BES; United States Department of Energy (DOE) King Abdulaziz University
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemical and Biological Engineering
- Web of Science ID
- WOS:000333108500033
- Scopus ID
- 2-s2.0-84897104849
- Other Identifier
- 991019296760504721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Physical