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In Situ Incorporation Strategy for Bimetallic FeCo‐Doped Carbon as Highly Efficient Bifunctional Oxygen Electrocatalysts
Author(s) -
Shui Hengxin,
Jin Tian,
Hu Jun,
Liu Honglai
Publication year - 2018
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201800013
Subject(s) - bifunctional , overpotential , bimetallic strip , oxygen evolution , oxygen reduction , cobalt , materials science , oxygen , electrode , carbon fibers , metal , chemical engineering , oxygen reduction reaction , catalysis , inorganic chemistry , chemistry , nanotechnology , metallurgy , electrochemistry , composite material , organic chemistry , composite number , engineering
Highly efficient bifunctional oxygen reduction reaction/oxygen evolution reaction (ORR/OER) electrocatalysts are of great significance for developing rechargeable metal–air batteries. A facile in situ incorporation strategy was proposed to introduce an iron‐based complex into a cobalt‐based ZIF‐67 framework. The resultant FeCo−N/C exhibited an excellent ORR activity with a high half‐wave potential of 0.84 V and simultaneous outstanding OER activity with a low overpotential of 370 mV at a current density of 10 mA cm −2 in 0.1 M KOH. The overall oxygen electrode activity was calculated to be as low as 0.77 V. This work provides new opportunities for the development of highly efficient bifunctional electrocatalysts.