Pt3Re alloy nanoparticles as electrocatalysts for the oxygen reduction reaction

David Raciti; Joseph Kubal; Cheng Ma; Michael Barclay; Matthew Gonzalez; Miaofang Chi; Jeffrey Greeley; Karren L. More; Chao Wang

doi:10.1016/j.nanoen.2015.12.014

Pt₃Re alloy nanoparticles as electrocatalysts for the oxygen reduction reaction

David Raciti, Joseph Kubal, Cheng Ma, Michael Barclay, Matthew Gonzalez, Miaofang Chi, Jeffrey Greeley, Karren L. More, Chao Wang

Research output: Contribution to journal › Article › peer-review

40 Scopus citations

Abstract

Development of renewable energy technologies requires advanced catalysts for efficient electrical-chemical energy conversion reactions. Here we report the study of Pt-Re alloy nanoparticles as an electrocatalyst for the oxygen reduction reaction (ORR). An organic solution approach is developed to synthesize monodisperse and homogeneous Pt₃Re alloy nanoparticles. Electrochemical studies show that these nanoparticles exhibit an improvement factor of 4 in catalytic activity for the ORR compared to commercial Pt catalysts of similar particle sizes. Fundamental understanding of the structure-property relationship is established by combining material characterization using X-ray spectroscopy and atomically resolved electron microscopy, as well as Density Functional Theory (DFT) calculations. Our work revealed that an electronic modification of the surface properties of Pt by subsurface Re (ligand effect) accounts for the catalytic enhancement.

Original language	English
Pages (from-to)	202-211
Number of pages	10
Journal	Nano Energy
Volume	20
DOIs	https://doi.org/10.1016/j.nanoen.2015.12.014
State	Published - Feb 1 2016

Funding

This work was supported by the start-up fund and E2SHI Seed Grant from Johns Hopkins University , the Ralph E. Powe Jr. Faculty Enhancement Award (ORAU) , and the National Science Foundation ( CBET-1437219 ). The microscopic work at Oak Ridge National Laboratory was performed at the Center for Nanophase Materials Sciences (CNMS), which is a user facility supported by the U.S. Department of Energy, Office of Science . J.G also acknowledges support through an Early Career grant from the Department of Energy, Office of Science, Office of Basic Energy Sciences, Chemical Sciences Division . Computational support through the National Energy Research Scientific Computing Center (NERSC) is gratefully acknowledged. The authors thank Prof. Howard Fairbrother for help on XPS analysis.

Funders	Funder number
Center for Nanophase Materials Sciences
Office of Basic Energy Sciences
National Science Foundation	CBET-1437219
U.S. Department of Energy
Office of Science
Oak Ridge Associated Universities
Johns Hopkins University

Keywords

Electrocatalysts
Ligand effect
Organic solution synthesis
Oxygen reduction reaction
Platinum rhenium alloy nanoparticles

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.nanoen.2015.12.014

Cite this

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title = "Pt3Re alloy nanoparticles as electrocatalysts for the oxygen reduction reaction",

abstract = "Development of renewable energy technologies requires advanced catalysts for efficient electrical-chemical energy conversion reactions. Here we report the study of Pt-Re alloy nanoparticles as an electrocatalyst for the oxygen reduction reaction (ORR). An organic solution approach is developed to synthesize monodisperse and homogeneous Pt3Re alloy nanoparticles. Electrochemical studies show that these nanoparticles exhibit an improvement factor of 4 in catalytic activity for the ORR compared to commercial Pt catalysts of similar particle sizes. Fundamental understanding of the structure-property relationship is established by combining material characterization using X-ray spectroscopy and atomically resolved electron microscopy, as well as Density Functional Theory (DFT) calculations. Our work revealed that an electronic modification of the surface properties of Pt by subsurface Re (ligand effect) accounts for the catalytic enhancement.",

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AU - Greeley, Jeffrey

AU - More, Karren L.

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AB - Development of renewable energy technologies requires advanced catalysts for efficient electrical-chemical energy conversion reactions. Here we report the study of Pt-Re alloy nanoparticles as an electrocatalyst for the oxygen reduction reaction (ORR). An organic solution approach is developed to synthesize monodisperse and homogeneous Pt3Re alloy nanoparticles. Electrochemical studies show that these nanoparticles exhibit an improvement factor of 4 in catalytic activity for the ORR compared to commercial Pt catalysts of similar particle sizes. Fundamental understanding of the structure-property relationship is established by combining material characterization using X-ray spectroscopy and atomically resolved electron microscopy, as well as Density Functional Theory (DFT) calculations. Our work revealed that an electronic modification of the surface properties of Pt by subsurface Re (ligand effect) accounts for the catalytic enhancement.

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