Core/shell face-centered tetragonal FePd/Pd nanoparticles as an efficient non-Pt catalyst for the oxygen reduction reaction

Zhu, Huiyuan; Jiang, Guangming; Zhang, Xu; Shen, Bo; Wu, Liheng; Zhang, Sen; Lu, Gang; Wu, Zhongbiao; Sun, Shouheng

doi:10.1021/acsnano.5b04361

Core/shell face-centered tetragonal FePd/Pd nanoparticles as an efficient non-Pt catalyst for the oxygen reduction reaction

Journal Article · Sun Oct 04 00:00:00 EDT 2015 · ACS Nano

DOI:https://doi.org/10.1021/acsnano.5b04361· OSTI ID:1287022

Zhu, Huiyuan ^[1]; Jiang, Guangming ^[2]; Zhang, Xu ^[3]; Shen, Bo ^[1]; Wu, Liheng ^[1]; Zhang, Sen ^[1]; Lu, Gang ^[3]; Wu, Zhongbiao ^[4]; Sun, Shouheng ^[1]

Brown Univ., Providence, RI (United States)
Brown Univ., Providence, RI (United States); Zhejiang Univ., Hangzhou (China)
California State Univ., Northridge, CA (United States)
Zhejiang Univ., Hangzhou (China)

We report the synthesis of core/shell face-centered tetragonal (fct)-FePd/Pd nanoparticles (NPs) via reductive annealing of core/shell Pd/Fe₃O₄ NPs followed by temperature-controlled Fe etching in acetic acid. Among three different kinds of core/shell FePd/Pd NPs studied (FePd core at similar to 8 nm and Pd shell at 0.27, 0.65, or 0.81 nm), the fct-FePd/Pd-0.65 NPs are the most efficient catalyst for the oxygen reduction reaction (ORR) in 0.1 M HClO₄ with Pt-like activity and durability. This enhanced ORR catalysis arises from the desired Pd lattice compression in the 0.65 nm Pd shell induced by the fct-FePd core. Lastly, our study offers a general approach to enhance Pd catalysis in acid for ORB.

View Accepted Manuscript (DOE)

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1287022

Journal Information:: ACS Nano, Journal Name: ACS Nano Journal Issue: 11 Vol. 9; ISSN 1936-0851

Publisher:: American Chemical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
FePd
core/shell nanoparticles
electrocatalysis
face-centered tetragonal structure
oxygen reduction reaction

Core/shell face-centered tetragonal FePd/Pd nanoparticles as an efficient non-Pt catalyst for the oxygen reduction reaction

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