Hydrothermal Synthesis of Polyhedral Nickel Sulfide by Dual Sulfur Source for Highly-Efficient Hydrogen Evolution Catalysis

Nanomaterials

Xiaomeng Duan¹  Haizeng Song²  Zehui Peng³  Yuan Gao³  Ka Wang³  Shancheng Yan³  Zixia Lin⁴ 

[1] Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China;School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China;School of Geography and Biological Information, Nanjing University of Posts and Telecommunications, Nanjing 210023, China;Testing Center, Yangzhou University, Yangzhou 225009, China;

关键词: transition metal sulfide;    hydrogen evolution reaction;    electrocatalyst;   

DOI  :  10.3390/nano10112115

来源: DOAJ

【 摘 要 】

Transition metal sulfides are cheap and efficient catalysts for water splitting to produce hydrogen; these compounds have attracted wide attention. Nickel sulfide (NiS₂) has been studied in depth because of its simple preparation process, excellent performance and good stability. Here, we propose a modification to the hydrothermal synthesis method for the fabrication of a highly efficient and stable NiS₂ electrocatalyst prepared by two different sulfur sources, i.e., sulfur powder and C₃H₇NaO₃S₂ (MPS), for application in hydrogen evolution reactions. The obtained NiS₂ demonstrated excellent HER performance with an overpotential of 131 mV to drive -10 mA cm⁻¹ in 0.5 M H₂SO₄ solution with 5mV performance change after 1000 cycles of stability testing. We believe that this discovery will promote the industrial development of nonprecious metal catalysts.

【 授权许可】

Unknown