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FeCoNi Ternary Spinel Oxides Nanosheets as High Performance Water Oxidation Electrocatalyst
Author(s) -
Kong Qingquan,
Bai Weijing,
Bai Fangzheng,
An Xuguang,
Feng Wei,
Zhou Fengling,
Chen Qiuyue,
Wang Qingyuan,
Sun Chenghua
Publication year - 2020
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.202000004
Subject(s) - tafel equation , spinel , electrocatalyst , ternary operation , materials science , chemical engineering , catalysis , oxygen evolution , annealing (glass) , inorganic chemistry , chemistry , electrochemistry , electrode , composite material , metallurgy , organic chemistry , computer science , engineering , programming language
FeCoNi spinel oxides nanosheets array directly supported on the Ni foam substrate were prepared via a facile wet chemical method with 2‐methylimidazole as a structure directing agent and subsequently annealing. The as‐prepared 0.1Fe−CoNiO/NF offers high intrinsic catalytic activity, high surface area and good conductivity, resulting in enhanced activity for the oxygen evolution reaction (OER) in the alkaline solution. It demonstrates an ultralow overpotentials of 240 mV at 10 mA cm −2 and a small Tafel slope of 36.8 mV dec −1 , with attractive durability during long‐term operation in 1 M KOH solution.