In situ coupling of MnS-MoS2 bimetallic sulfide on nickel foam by [MnMo_9O_(32)]~(6-) platform for advanced hydrogen evolution

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作   者：

Boxin Xiao;  Shifa Ullah Khan;  Guannan Cui;  Liming Dong;  Chunjing Zhang;  Qiong Wu;  Haijun Pang; 

作者机构：

University of Okara;  Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science;  Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry Beijing Technology and Business University;  Kunming 650214;  Qingdao;  MOE;  College of Pharmaceutical Sciences;  Punjab;  Yunnan Key Laboratory of Metal-Organic Molecular Materials and Devices;  Renala Campus;  School of Chemistry and Chemical Engineering;  Qingdao University of Science and Technology;  People's Republic of China;  Beijing 100048;  The Institute of Chemistry;  Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry Beijing Technology and Business University;  School of Materials Science and Chemical Engineering;  Pakistan;  Kunming University;  Harbin 150040;  School of Materials Science and Chemical Engineering;  China;  Faculty of Science;  Heilongjiang University of Chinese Medicine;  Harbin University of Science and Technology; 

关键词：

Electrocatalyst;  Hydrogen evolution;  Polyoxometalate;  In situ growth; 

期刊名称：

Clean technologies and environmental policy

i s s n：

1618-954X

年卷期：

2023 年 25 卷 8 期

页   码：

2629-2638

页   码：

摘   要：

Electrocatalytic water splitting is one of the green and sustainable hydrogen energy methods. However, the hydrogen evolution reaction (HER) suffers from slow kinetics due to the high energy barrier of the H-O bond in a water molecule. The key to boosting HER is to add efficient electrocatalysts. In this paper, by a facile one-pot sulphuration method, the Waugh-type polyoxometalate ((NH_4)_6[MnMo_9O_(32)]) is firstly used as raw materials, and uniform bimetallic sulfides are in situ coupled on high conductivity nickel foam (NF) substrates to form a series of MnS-MoS_2-NF electrocatalysts. As a result, the catalysts possess ultrahigh catalytic activity for hydrogen evolution reaction in alkaline electrolyte, showing a low overpotential of 56 mV at a current density of 10 mA cm~(-2), which is close to that 35 mV dec~(-1) of the 20% Pt/C electrode. Also, Meanwhile, 24 h I-T test and scanning electron microscopy observation were carried out before and after the experiment, which proved that the material has long-term stability. This work provides a feasible strategy for the rational design and preparation of highly efficient HER electrocatalysts.