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Synthesis and electrocatalytic activity of Ni0.85Se/MoS2 for hydrogen evolution reaction

Yang, Zhaoxia, Cai, Qiong, Feng, Chuanqi, Wu, Huimin and Mei, He (2019) Synthesis and electrocatalytic activity of Ni0.85Se/MoS2 for hydrogen evolution reaction INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 44 (48). pp. 26109-26117.

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Abstract

Recently, the replacement of expensive platinum-based catalytic materials with nonprecious metal materials to electrolyze water for hydrogen separation has attracted much attention. In this work, Ni0.85Se, MoS2 and their composite Ni0.85Se/MoS2 with different mole ratios are prepared successfully, as electrocatalysts to catalyze the hydrogen evolution reaction (HER) in water splitting. The result shows that MoS2/Ni0.85Se with a molar ratio of Mo/Ni = 30 (denoted as M30) has the best catalytic performance towards HER, with the lowest overpotential of 118 mV at 10 mA cm -2, smallest Tafel slope of 49 mV dec -1 among all the synthesized materials. Long-term electrochemical testing shows that M30 has good stability for HER over at least 30 h. These results maybe due to the large electrochemical active surface area and high conductivity. This work shows that transition metal selenides and sulfides can form effective electrocatalyst for HER.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Chemical and Process Engineering
Authors :
NameEmailORCID
Yang, Zhaoxia
Cai, Qiongq.cai@surrey.ac.uk
Feng, Chuanqi
Wu, Huimin
Mei, He
Date : 8 October 2019
DOI : 10.1016/j.ijhydene.2019.08.118
Copyright Disclaimer : © 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
Uncontrolled Keywords : Hydrogen evolution reaction; Water splitting electrocatalysts; Transition metal selenides; Disulfides; Composite
Additional Information : We acknowledge financial support from the National Natural Science Foundation of China (Grant No. 21205030), the Key Project of Hubei Provincial Education Department (D20171001), Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices (201710), Hubei Key Laboratory for Processing and Application of Catalytic Materials (201829303), and (111 project, B12015).
Depositing User : Diane Maxfield
Date Deposited : 16 Oct 2019 14:53
Last Modified : 16 Oct 2019 14:53
URI: http://epubs.surrey.ac.uk/id/eprint/852939

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