Open AccessA 2D NiFe Bimetallic Metal–Organic Frameworks for Efficient Oxygen Evolution Electrocatalysis
Author(s) -
Hao Yongchao,
Liu Qinglin,
Zhou Ying,
Yuan Zeqian,
Fan Yanan,
Ke Zhuofeng,
Su ChengYong,
Li Guangqin
Publication year - 2019
Publication title -
energy and environmental materials
Language(s) - English
Resource type - Journals
ISSN - 2575-0356
DOI - 10.1002/eem2.12024
Subject(s) - tafel equation , oxygen evolution , overpotential , electrocatalyst , bimetallic strip , water splitting , materials science , catalysis , electrolyte , chemical engineering , electrochemistry , battery (electricity) , electrochemical energy conversion , metal organic framework , metal , inorganic chemistry , nanotechnology , chemistry , electrode , metallurgy , thermodynamics , adsorption , biochemistry , power (physics) , physics , photocatalysis , engineering
The oxygen evolution reaction ( OER ) is the cornerstone for many important energy conversion devices, including metal–air battery and water splitting. Herein, an optimized NiFe‐based metal–organic framework is developed as highly efficient active material for OER . It just needs a low overpotential of 0.31 V to deliver a current density of 10 mA cm −2 with a favorable Tafel slope of 43.7 mV dec −1 in 0.1 m KOH electrolyte for the as‐prepared Ni 0.75 Fe 0.25 BDC , which is superior to RuO 2 . This efficient catalytic performance is due to the introduction of Fe in Ni‐based MOF s could benefit the kinetics and charge transfer efficiency, resulting in the optimal activity toward OER . Besides, the obtained active material demonstrates good stability, suggesting the great potential value in sustainable electrochemical energy storage and conversion devices.