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Synthesis of iron and vanadium co‐doped mesoporous cobalt oxide: An efficient and robust catalysts for electrochemical water oxidation
Author(s) -
Amer Mabrook S.,
Arunachalam Prabhakarn,
Ghanem Mohamed A.,
AlShalwi Matar,
Ahmad Ashfaq,
Alharthi Abdulrahman I.,
AlMayouf Abdullah M.
Publication year - 2021
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.6471
Subject(s) - oxygen evolution , materials science , mesoporous material , cobalt , overpotential , catalysis , electrochemistry , electrocatalyst , inorganic chemistry , cobalt oxide , oxide , chemical engineering , electrolyte , transition metal , electrode , chemistry , metallurgy , organic chemistry , engineering
Summary Dual metal doping and optimization are considered as vital approaches for enhancing the electrocatalytic features toward oxygen evolution reaction. Herein, a sequence of Fe and V dual metal‐doped mesoporous cobalt oxide (FeV/ meso ‐Co) electrocatalysts was successfully synthesized through citric acid‐assisted evaporation‐induced self‐assembly (EISA) method. The textural, morphological, crystallinity, and electrochemical activities of Fe/V ‐ promoted meso‐ Co (124 m 2 /g) are found strongly associated with dual (Fe and V) metal concentration. Benefiting from the combined effect of FeV‐doping, the FeV/ meso ‐Co exhibited an extremely lower overpotential of 280 mV to reach 10 mA/cm 2 for oxygen evolution reaction (OER) in 1M KOH electrolyte, which was the considerably lowest value among the earlier catalysts, and the FeV/ meso‐ Co showed similar features as IrO 2 electrodes. Furthermore, FeV/ meso ‐Co electrodes display highly durable (>30 hours) electrocatalytic performance for OER. This inexpensive approach of producing transition dual metal‐doped mesoporous materials offers excellent promise for fabricating efficient catalysts and other electrochemical energy‐conversion devices.