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Ultimate Corrosion to Pt‐Cu Electrocatalysts for Enhancing Methanol Oxidation Activity and Stability in Acidic Media
Author(s) -
Wang Yong,
Yu HaoZheng,
Ying Jie,
Tian Ge,
Liu Yu,
Geng Wei,
Hu Jie,
Lu Yi,
Chang GangGang,
Ozoemena Kenneth I.,
Janiak Christoph,
Yang XiaoYu
Publication year - 2021
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202100754
Subject(s) - electrocatalyst , platinum , methanol , transition metal , corrosion , leaching (pedology) , materials science , catalysis , inorganic chemistry , chemical engineering , chemistry , electrochemistry , metallurgy , electrode , organic chemistry , engineering , environmental science , soil science , soil water
Abstract Alloying platinum (Pt) with transition metals (M), as an established class of electrocatalysts, reduces the use of Pt and improves the electrocatalytic performance. However, the stability of transition metals in nanostructured platinum alloys is a fundamental and practical problem in electrocatalysis, due to leaching of transition metals under acidic operating condition. Here, a corrosion method has been developed for a Pt−Cu electrocatalyst with high activity (6.6 times that of commercial Pt/C) and excellent stability for the methanol oxidation reaction (MOR) under acidic operating conditions. The mechanism of formation has been studied, and possible mesostructured re‐formation and atomic re‐organization have been proposed. This work offers an effective strategy for the facile synthesis of a highly acid‐stable PtM alloying and opens a door to high‐performance design for electrocatalysts.