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Self‐Supported PtAuCu@Cu 2 O/Pt Hybrid Nanobranch as a Robust Electrocatalyst for the Oxygen Reduction Reaction
Author(s) -
Gong Hongyu,
Cao Xuecheng,
Mendes Rafael Gregorio,
Rummeli Mark H.,
Zhang Jingyu,
Yang Ruizhi
Publication year - 2017
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201700319
Subject(s) - electrocatalyst , cyclic voltammetry , materials science , porosity , fuel cells , electrochemistry , catalysis , chemical engineering , oxygen reduction , alloy , chemistry , composite material , electrode , biochemistry , engineering
Three‐dimensional self‐supported metallic structures are attractive for their unique properties of high porosity, good flexibility, large surface area per unit volume, and open‐pore structure, which promote their broad application in fuel cells. Here, for the first time, a self‐supported PtAuCu alloy and Pt supported over Cu 2 O, as two effective independent strategies, are combined into a single system, which leads to an enhanced electrochemical performance for the oxygen reduction reaction as compared to the commercial Pt/C. After cyclic voltammetry for 2000 cycles between 0.03 and 1.40 V, PtAuCu@Cu 2 O/Pt maintains high activity, whereas Pt/C shows a half‐wave potential loss of around 20 mV. This work provides an effective strategy for rational design of highly active and stable catalysts for fuel cell applications and beyond.