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Ligand‐Controlled Electrodeposition of Highly Intrinsically Active and Optically Transparent NiFeO x H y Film as a Water Oxidation Electrocatalyst
Author(s) -
Lee Husileng,
Wu Xiujuan,
Yang Xiaonan,
Sun Licheng
Publication year - 2017
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201701869
Subject(s) - overpotential , electrocatalyst , ligand (biochemistry) , catalysis , electrochemistry , substituent , water splitting , current density , chemistry , materials science , inorganic chemistry , stereochemistry , electrode , photocatalysis , organic chemistry , physics , biochemistry , receptor , quantum mechanics
A highly intrinsically active and optically transparent NiFeO x H y water oxidation catalyst was prepared by electrodeposition of [Ni(C 12 ‐tpen)](ClO 4 ) 2 complex (Ni−C 12 ). This NiFeO x H y film has a current density of 10 mA cm −2 with an overpotential ( η ) of only 298 mV at nanomolar concentration and the current density of 10 mA cm −2 remains constant over 22 h in 1 m KOH. The extremely high turnover frequency of 0.51 s −1 was obtained with η of 300 mV. More importantly, such outstanding activity and transparency (optical loss <0.5 %) of the NiFeO x H y film are attributed to a ligand effect of the dodecyl substituent in Ni−C 12 , which enables its future application in solar water splitting.