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Title: Spontaneous incorporation of gold in palladium-based ternary nanoparticles makes durable electrocatalysts for oxygen reduction reaction

Journal Article · · Nature Communications
DOI:https://doi.org/10.1038/ncomms11941· OSTI ID:1280818

Replacing platinum by a less precious metal such as palladium, is highly desirable for lowering the cost of fuel-cell electrocatalysts. However, the instability of palladium in the harsh environment of fuel-cell cathodes renders its commercial future bleak. Here in this paper, we show that by incorporating trace amounts of gold in palladium-based ternary (Pd6CoCu) nanocatalysts, the durability of the catalysts improves markedly. Using aberration-corrected analytical transmission electron microscopy in conjunction with synchrotron X-ray absorption spectroscopy, we show that gold not only galvanically replaces cobalt and copper on the surface, but also penetrates through the Pd–Co–Cu lattice and distributes uniformly within the particles. The uniform incorporation of Au provides a stability boost to the entire host particle, from the surface to the interior. The spontaneous replacement method we have developed is scalable and commercially viable. In conclusion, this work may provide new insight for the large-scale production of non-platinum electrocatalysts for fuel-cell applications.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN); Energy Frontier Research Centers (EFRC) (United States). Energy Materials Center at Cornell (EMC2)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-76SF00515; SC0012704; SC0001086
OSTI ID:
1280818
Alternate ID(s):
OSTI ID: 1336047
Report Number(s):
BNL-112299-2016-JA; ncomms11941
Journal Information:
Nature Communications, Vol. 7; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 61 works
Citation information provided by
Web of Science

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Cited By (10)

Hyperporous-Carbon-Supported Nonprecious Metal Electrocatalysts for the Oxygen Reduction Reaction journal August 2018
Enhanced Oxygen Reduction Activity on Carbon Supported Pd Nanoparticles Via SiO 2 journal January 2019
High‐Performance Ordered PdCuFe/C Intermetallic Catalyst for Electrochemical Oxygen Reduction in Proton Exchange Membrane Fuel Cells journal May 2019
Solvent-mediated length tuning of ultrathin platinum–cobalt nanowires for efficient electrocatalysis journal January 2018
Deposition and morphological evolution of nanostructured palladium during potential cycling: a liquid-cell TEM study journal January 2019
Solid-solution alloy nanoparticles of a combination of immiscible Au and Ru with a large gap of reduction potential and their enhanced oxygen evolution reaction performance journal January 2019
Highly stable Pt 3 Ni nanowires tailored with trace Au for the oxygen reduction reaction journal January 2019
Recent Progress in Nitrogen-Doped Metal-Free Electrocatalysts for Oxygen Reduction Reaction journal May 2018
Electrocatalytic Activities towards the Electrochemical Oxidation of Formic Acid and Oxygen Reduction Reactions over Bimetallic, Trimetallic and Core–Shell-Structured Pd-Based Materials journal March 2019
Active Sites Derived from Heteroatom Doping in Carbon Materials for Oxygen Reduction Reaction book December 2018