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Title: Biaxially strained PtPb/Pt core/shell nanoplate boosts oxygen reduction catalysis

Journal Article · · Science
 [1];  [1];  [2];  [3];  [4];  [1];  [1];  [3];  [5];  [4];  [1]
  1. Soochow Univ., Jiangsu (China). College of Chemistry, Chemical Engineering and Materials Science
  2. Peking Univ., Beijing (China). College of Engineering, Dept. of Materials Science and Engineering and Dept. of Energy and Resources Engineering; Peking Univ., Beijing (China). College of Engineering, Beijing Innovation Center for Engineering Science and Advanced Technology (BIC-ESAT); Peking Univ., Beijing (China). College of Engineering, Key Lab. of Theory and Technology of Advanced Batteries Materials
  3. California State Univ. (CalState), Northridge, CA (United States). Dept. of Physics and Astronomy
  4. Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
  5. Chinese Academy of Sciences (CAS), Shanghai (China). Shanghai Synchrotron Radiation Facility, Shanghai Inst. of Applied Physics

Compressive surface strains have been necessary to boost oxygen reduction reaction (ORR) activity in core/shell M/Pt catalysts (where M can be Ni, Co, Fe). We report a class of PtPb/Pt core/shell nanoplate catalysts that exhibit large biaxial tensile strains. The stable Pt (110) facets of the nanoplates have high ORR specific and mass activities that reach 7.8 milliampere per centimeter square and 4.3 ampere per milligram of platinum at 0.9 volts versus the reversible hydrogen electrode (RHE), respectively. Density functional theory calculations revealed that the edge-­Pt and top (bottom)-Pt (110) facets undergo large tensile strains that help optimize the Pt-­O bond strength. The intermetallic core and uniform 4 layers of Pt shell of the PtPb/Pt nanoplates appear to underlie the high endurance of these catalysts, which can undergo 50,000 voltage cycles with negligible activity decay and no apparent structure and composition changes.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States). Center for Functional Nanomaterials
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
SC0012704
OSTI ID:
1336209
Report Number(s):
BNL--113227-2016-JA; KC0403020
Journal Information:
Science, Journal Name: Science Journal Issue: 6318 Vol. 354; ISSN 0036-8075
Publisher:
AAASCopyright Statement
Country of Publication:
United States
Language:
English

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Facile synthesis of polyacrylonitrile-based N/S-codoped porous carbon as an efficient oxygen reduction electrocatalyst for zinc–air batteries journal January 2019
Atomically dispersed Fe–N x active sites within hierarchical mesoporous carbon as efficient electrocatalysts for the oxygen reduction reaction journal January 2019
Advanced engineering of core/shell nanostructures for electrochemical carbon dioxide reduction journal January 2019
Shape-controlled Pd nanocrystal–polyaniline heteronanostructures with modulated polyaniline thickness for efficient electrochemical ethanol oxidation journal January 2019
Hydroxyl group modification improves the electrocatalytic ORR and OER activity of graphene supported single and bi-metal atomic catalysts (Ni, Co, and Fe) journal January 2019
Catalyst design by scanning probe block copolymer lithography journal March 2018
Recent progress in the synthesis and applications of 2D metal nanosheets journal March 2019
All-metallic nanorattles consisting of a Pt core and a mesoporous PtPd shell for enhanced electrocatalysis journal September 2019
Integration mesoporous surface and hollow cavity into PtPdRh nano-octahedra for enhanced oxygen reduction electrocatalysis journal October 2019
Toward sustainable fuel cells journal December 2016
Carbothermal shock synthesis of high-entropy-alloy nanoparticles journal March 2018
Tunable intrinsic strain in two-dimensional transition metal electrocatalysts journal February 2019
Engineering bunched Pt-Ni alloy nanocages for efficient oxygen reduction in practical fuel cells journal November 2019
Oxygen Reduction Reaction from Water Electrolysis Intensified by Pressure and O 2 Oxidation Desulfurization journal January 2018
Platinum-Based Catalysts on Various Carbon Supports and Conducting Polymers for Direct Methanol Fuel Cell Applications: a Review journal December 2018
Oxygen Reduction Reaction Catalyzed by Noble Metal Clusters journal February 2018
AuPt Nanoparticles Clusters on MWCNTs with Enhanced Electrocatalytic Activity for Methanol Oxidation journal December 2018
A Simple Mechanical Method to Modulate the Electrochemical Electrosorption Processes at Metal Surfaces journal October 2019
Recent Advances in Isolated Single-Atom Catalysts for Zinc Air Batteries: A Focus Review journal October 2019
Moving Frontiers in Transition Metal Catalysis: Synthesis, Characterization and Modeling text January 2019