Enhanced electrocatalytic activity of the solvothermally synthesized Mesoporous Rhombohedral nickel sulphide

被引：18

作者：

Bhardwaj, Rekha ^{[1
]}

Jha, Ranjana ^{[2
]}

Bhushan, Medha ^{[1
]}

Sharma, Reetu ^{[3
]}

机构：

[1] Univ Delhi, Netaji Subhas Inst Technol, Dept Phys, Res Lab Energy Syst, New Delhi 110078, India

[2] Netaji Subhas Univ Technol, Dept Phys, Res Lab Energy Syst, New Delhi 110078, India

[3] Univ Delhi, Netaji Subhas Inst Technol, Dept Chem, Res Lab Energy Syst, New Delhi 110078, India

来源：

MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING | 2020年 / 118卷

关键词：

Nano rods; Cluster beans; Electrocatalytic studies; Areal capacitance; Mesoporous; THIN-FILM; BETA-NIS; ELECTROCHEMICAL PERFORMANCE; PHOTOCATALYTIC ACTIVITY; AQUEOUS-ELECTROLYTE; HYDROTHERMAL GROWTH; HYDROGEN EVOLUTION; CHEMICAL-SYNTHESIS; ENERGY-CONVERSION; HIGHLY EFFICIENT;

D O I：

10.1016/j.mssp.2020.105194

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In the present work, Mesoporous Rhombohedral beta-NiS (Nickel Sulphide) was synthesized by a solvothermal route using thiourea as Sulphur source. Rietveld refinement confirms the single phase formation of Rhombohedral beta-NiS. Reaction temperature affects the electro-catalytic, optical and morphology of the synthesized beta-NiS nanoparticles. 1-D nano-rods and cluster beans like structures are observed in FESEM images. At lower tem-perature, energy band gap of the synthesized beta-NiS nanoparticles is found to be 2.75 eV. Carbonaceous free electrodes were used for electrocatalytic studies in 1 M aqueous LiOH electrolyte. Electrocatalytic activity of beta-NiS nanoparticles were studied by cyclic voltammetry technique and electrochemical impedance spectroscopy. During the analysis of cyclic voltammetry technique it was found that the synthesized beta-NiS electrode showed maximum areal capacitance 12.02 F cm(-2) with 83% cyclic stability over 1000 cyclic voltammetry cycles.

引用

页数：9

共 59 条

[1] Ethylenediamine-assisted growth of multi-dimensional ZnS nanostructures and study of its charge transfer mechanism on supercapacitor electrode and photocatalytic performance [J].