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A Reliable Aerosol‐Spray‐Assisted Approach to Produce and Optimize Amorphous Metal Oxide Catalysts for Electrochemical Water Splitting
Author(s) -
Kuai Long,
Geng Jing,
Chen Changyu,
Kan Erjie,
Liu Yadong,
Wang Qing,
Geng Baoyou
Publication year - 2014
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201404208
Subject(s) - tafel equation , overpotential , amorphous solid , oxide , catalysis , materials science , electrochemistry , chemical engineering , amorphous metal , oxygen evolution , metal , water splitting , nanotechnology , inorganic chemistry , metallurgy , chemistry , electrode , photocatalysis , organic chemistry , engineering
An aerosol‐spray‐assisted approach (ASAA) is proposed and confirmed as a precisely controllable and continuous method to fabricate amorphous mixed metal oxides for electrochemical water splitting. The proportion of metal elements can be accurately controlled to within (5±5) %. The products can be sustainably obtained, which is highly suitable for industrial applications. ASAA was used to show that Fe 6 Ni 10 O x is the best catalyst among the investigated Fe‐Ni‐O x series with an overpotential of as low as 0.286 V (10 mA cm −2 ) and a Tafel slope of 48 mV/decade for the electrochemical oxygen evolution reaction. Therefore, this work contributes a versatile, continuous, and reliable way to produce and optimize amorphous metal oxide catalysts.