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Enhancing Oxygen Evolution Reaction through Modulating Electronic Structure of Trimetallic Electrocatalysts Derived from Metal–Organic Frameworks
Author(s) -
Li Yuwen,
Zhao Tao,
Lu Mengting,
Wu Yuhang,
Xie Yuanbo,
Xu Hui,
Gao Junkuo,
Yao Juming,
Qian Guodong,
Zhang Qichun
Publication year - 2019
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201901940
Subject(s) - overpotential , oxygen evolution , materials science , metal organic framework , metal , chemical engineering , carbon fibers , doping , nanotechnology , redox , inorganic chemistry , electrochemistry , chemistry , metallurgy , organic chemistry , electrode , composite material , optoelectronics , adsorption , composite number , engineering
The construction of efficient, durable, and non‐noble metal electrocatalysts for oxygen evolution reaction (OER) is of great value but challenging. Herein, a facile method is developed to synthesize a series of trimetallic (W/Co/Fe) metal–organic frameworks (MOFs)‐derived carbon nanoflakes (CNF) with various Fe content, and an Fe‐dependent volcano‐type plot can be drawn out for WCoFe x ‐CNF. The optimized WCoFe 0.3 ‐CNF (when the feed ratio of Fe/Co is 0.3) demonstrates superior electrocatalytic performance with a low overpotential of only 254 mV@10 mA cm −2 and excellent durability of 100 h. Further researches show that appropriate amount of iron doping can regulate the electronic structure, resulting in a favorable synergistic environment. This method may stimulate the exploration of electrocatalysts by utilizing MOFs as precursors while realizing electronic modulation by multimetal doping.