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Ni III ‐rich NiFeBa as an Efficient Catalyst for Water Oxidation
Author(s) -
Zhang Peili,
Song Tao,
Zheng Dehua,
Li Fusheng,
Wu Xiujuan,
Fan Ke,
Sun Licheng
Publication year - 2021
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.202100833
Subject(s) - overpotential , catalysis , oxygen evolution , hydroxide , oxide , water splitting , inorganic chemistry , oxygen , chemistry , octahedron , electrolysis of water , ion , chemical engineering , materials science , electrochemistry , electrode , electrolyte , photocatalysis , biochemistry , organic chemistry , engineering , electrolysis
Electrocatalytic water oxidation requires efficient catalysts to reduce the overpotential and accelerate the sluggish kinetics of oxygen formation. Here, a promising NiFeBa material was prepared by the co‐electrodeposition of Ba 2+ , Ni 2+ , and Fe 3+ as an efficient catalyst for electrocatalytic water oxidation. NiFeBa showed enhanced water oxidation performance compared with NiFe layered double hydroxide and NiFe oxide, delivering a current density of 10 mA cm −2 at an overpotential of 180 mV. Doped Ba ions played a key role in stabilizing the electrogenerated Ni 3+ species, producing more octahedral Ni−O structures for lattice oxygen‐based water oxidation, adjusting the catalytic mechanism, and finally leading to an enhancement of catalytic efficiency.