过电位
分解水
化学
析氧
电解水
电解质
双功能
电解
循环伏安法
阳极
无机化学
催化作用
电极
化学工程
阴极
镍
电化学
物理化学
光催化
有机化学
工程类
作者
Jiang Yan Xue,Fei Long Li,Zhong Yin Zhao,Cong Liu,Chun Yan Ni,Hongwei Gu,David J. Young,Jian‐Ping Lang
出处
期刊:Inorganic Chemistry
[American Chemical Society]
日期:2019-08-06
卷期号:58 (16): 11202-11209
被引量:83
标识
DOI:10.1021/acs.inorgchem.9b01814
摘要
Design and synthesis of non-noble metal electrocatalysts with high activity and durability for the electrolysis of water is of great significance for energy conversion and storage. In this work, we prepared a series of Fe-doped MoS2 nanomaterials by simple one-pot solvothermal reactions of (NH4)2MoS4 with FeCl3·6H2O. An optimized working electrode of Fe-MoS2-5 displayed high hydrogen evolution reaction (HER) activity with a relatively small overpotential of 173 mV to achieve a current density of 10 mA cm–2 in 0.5 M H2SO4, along with no significant change in catalytic performance even after 1000 cyclic voltammetry (CV) cycles. Fe-MoS2 nanoparticles on nickel foam (NF; denoted as Fe-MoS2/NF) exhibited an overpotential of 230 mV at 20 mA cm–2 for the oxygen evolution reaction (OER) and 153 mV at 10 mA cm–2 for the HER in 1.0 M KOH electrolyte. Fe-MoS2/NF was stable for more than 140 h under these conditions. Furthermore, the two electrode system of Fe-MoS2/NF (anode)//Fe-MoS2/NF (cathode) electrodes demonstrated excellent electrocatalytic activity toward overall water splitting with a low potential of 1.52 V at 10 mA cm–2 in 1.0 M KOH electrolyte.
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