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Electrochemical Reduction of Carbon Dioxide and Iron Oxide in Molten Salts to Fe/Fe 3 C Modified Carbon for Electrocatalytic Oxygen Evolution
Author(s) -
Liang Xinxin,
Xiao Juanxiu,
Weng Wei,
Xiao Wei
Publication year - 2021
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202013257
Subject(s) - electrocatalyst , oxygen evolution , electrochemistry , electrolysis , materials science , electrolysis of water , inorganic chemistry , anode , carbon fibers , chemical engineering , electrochemical reduction of carbon dioxide , chemistry , catalysis , electrode , carbon monoxide , electrolyte , composite material , organic chemistry , composite number , engineering
Non‐noble electrocatalyst for the oxygen evolution reaction (OER) is essential for water electrolysis and electrochemical conversion of CO 2 . Integrating electrochemical fixation of CO 2 and electrochemical metallurgy to prepare advanced OER electrocatalyst is a promising solution to promote carbon neutrality and renewable energy. Herein, the electrochemical reduction of CO 2 and Fe 2 O 3 are combined in molten salts to prepare cathodic Fe 3 C‐based electrocatalyst and anodic oxygen at 600 °C with enhanced current efficiency. The resulting Fe 3 C‐based electrocatalyst outperforms precious electrocatalyst towards the OER operation in 1 M KOH due to a dynamic structural evolution to form an interface of Fe 3 C‐FeOOH.