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Ferrocene‐Based Metal–Organic Framework Nanosheets as a Robust Oxygen Evolution Catalyst
Author(s) -
Liang Jing,
Gao Xutao,
Guo Biao,
Ding Yu,
Yan Jiawei,
Guo Zhengxiao,
Tse Edmund C. M.,
Liu Jinxuan
Publication year - 2021
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202101878
Subject(s) - overpotential , oxygen evolution , ferrocene , electron transfer , metal organic framework , nickel , catalysis , electrochemistry , inorganic chemistry , water splitting , chemistry , materials science , chemical engineering , density functional theory , photochemistry , organic chemistry , electrode , photocatalysis , computational chemistry , adsorption , engineering
We report the synthesis of two‐dimensional metal–organic frameworks (MOFs) on nickel foam (NF) by assembling nickel chloride hexahydrate and 1,1′‐ferrocenedicarboxylic acid (NiFc‐MOF/NF). The NiFc‐MOF/NF exhibits superior oxygen evolution reaction (OER) performance with an overpotential of 195 mV and 241 mV at 10 and 100 mA cm −2 , respectively under alkaline conditions. Electrochemical results demonstrate that the superb OER performance originates from the ferrocene units that serve as efficient electron transfer intermediates. Density functional theory calculations reveal that the ferrocene units within the MOF crystalline structure enhance the overall electron transfer capacity, thereby leading to a theoretical overpotential of 0.52 eV, which is lower than that (0.81 eV) of the state‐of‐the‐art NiFe double hydroxides.