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Title: High-performance transition metal-doped Pt3Ni octahedra for oxygen reduction reaction

Journal Article · · Science
 [1];  [1];  [2];  [1];  [1];  [3];  [3];  [4];  [4];  [5];  [6];  [7];  [1]
  1. Univ. of California, Los Angeles, CA (United States). Dept. of Materials Science and Engineering; Univ. of California, Los Angeles, CA (United States). California NanoSystems Inst. (CNSI)
  2. Johns Hopkins Univ., Baltimore, MD (United States). Dept. of Physics and Astronomy
  3. Univ. of California, Los Angeles, CA (United States). Dept. of Chemistry and Biochemistry
  4. Univ. of California, Berkeley, CA (United States). Dept. of Physics and Center of Integrated Nanomechanical Systems; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division; Univ. of California, Berkeley, CA (United States). Kavli Energy NanoSciences Inst.
  5. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Physical and Life Sciences Directorate
  6. Univ. of California, Los Angeles, CA (United States). California NanoSystems Inst. (CNSI); Univ. of California, Los Angeles, CA (United States). Dept. of Chemistry and Biochemistry
  7. Johns Hopkins Univ., Baltimore, MD (United States). Dept. of Materials Science and Engineering

Bimetallic platinum-nickel (Pt-Ni) nanostructures represent an emerging class of electrocatalysts for oxygen reduction reaction (ORR) in fuel cells, but practical applications have been limited by catalytic activity and durability. We surface-doped Pt3Ni octahedra supported on carbon with transition metals, termed M-Pt3Ni/C, where M is vanadium, chromium, manganese, iron, cobalt, molybdenum (Mo), tungsten, or rhenium. The Mo-Pt3Ni/C showed the best ORR performance, with a specific activity of 10.3 mA/cm2 and mass activity of 6.98 A/mgPt, which are 81- and 73-fold enhancements compared with the commercial Pt/C catalyst (0.127 mA/cm2 and 0.096 A/mgPt). In conclusion, theoretical calculations suggest that Mo prefers subsurface positions near the particle edges in vacuum and surface vertex/edge sites in oxidizing conditions, where it enhances both the performance and the stability of the Pt3Ni catalyst.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES); Sloan Research Fellowship
Grant/Contract Number:
AC52-07NA27344; AC02‐05CH11231; EEC‐083219
OSTI ID:
1234589
Report Number(s):
LLNL-JRNL-666719
Journal Information:
Science, Vol. 348, Issue 6240; ISSN 0036-8075
Publisher:
AAASCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 1457 works
Citation information provided by
Web of Science

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Correlating the electrocatalytic stability of platinum monolayer catalysts with their structural evolution in the oxygen reduction reaction journal January 2018
Direct synthesis of superlong Pt|Te mesoporous nanotubes for electrocatalytic oxygen reduction journal January 2019
Shaping well-defined noble-metal-based nanostructures for fabricating high-performance electrocatalysts: advances and perspectives journal January 2019
Evidence for interfacial geometric interactions at metal–support interfaces and their influence on the electroactivity and stability of Pt nanoparticles journal January 2020
Antimony selenide thin-film solar cells journal April 2016
Insight of holey-graphene in the enhancing of electrocatalytic activity as supporting material journal August 2018
Improved Accelerated Stress Tests for ORR Catalysts Using a Rotating Disk Electrode journal January 2019
Dopant-Free Hole Transport Materials with a Long Alkyl Chain for Stable Perovskite Solar Cells journal June 2019
Effect of Ionic Liquid Modification on the ORR Performance and Degradation Mechanism of Trimetallic PtNiMo/C Catalysts journal August 2019
On-Chip in Situ Monitoring of Competitive Interfacial Anionic Chemisorption as a Descriptor for Oxygen Reduction Kinetics journal April 2018
Yolk–Shell Nanocomposites of a Gold Nanocore Encapsulated in an Electroactive Polyaniline Shell for Catalytic Aerobic Oxidation journal July 2016
Synthesis of Highly Efficient Bifunctional Ag/Co3O4 Catalyst for Oxygen Reduction and Oxygen Evolution Reactions in Alkaline Medium journal July 2018
Facile Synthesis of PtCu Alloy/Graphene Oxide Hybrids as Improved Electrocatalysts for Alkaline Fuel Cells journal August 2018
Influence of Metal–Ligand Coordination on the Elemental Growth and Alloying Composition of Pt–Ni Octahedral Nanoparticles for Oxygen Reduction Electrocatalysis journal May 2019
Shape-controlled synthesis of porous AuPt nanoparticles and their superior electrocatalytic activity for oxygen reduction reaction journal March 2016
Carbon-Based Nanomaterials as Sustainable Noble-Metal-Free Electrocatalysts journal November 2019
Gold Nanoclusters as Electrocatalysts for Energy Conversion journal January 2020
Nanostructure Optimization of Platinum-Based Nanomaterials for Catalytic Applications journal November 2018