One-step hydrothermal synthesis of flower-like CoS hierarchitectures for application in supercapacitors

Bulletin of Materials Science

LEI XIANG^2¹  JIA ZHU^1,2² 

[1] School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, People’s Republic of China^2;School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, People’s Republic of China^1

关键词: CoS hierarchitecture;    hydrothermal;    electrochemical;    supercapacitor.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Flower-like CoS hierarchitectures were successfully synthesized through a hydrothermal route in the presence of ethylenediamine as ligand and structure-directing agent. The structure and morphology of the products were characterized by X-ray diffraction, transmission electron microscopy, field emission scanning electron microscopy and N$_2$ adsorption–desorption isotherm. Flower-like CoS hierarchitectures are constructed by two-dimensional CoS nanopedals interlaced and stacked with each other. When tested as electrode material for supercapacitors, the as-fabricated CoS delivers a specific capacitance of 357 F g$^{−1}$ at 0.5 A g$^{−1}$. After 2000 repetitive charge–discharge cycles, there is only 12.7% loss of the original specific capacitance. The results signify that the CoS supercapacitor possesses good electrochemical performances, suggesting its potential application in supercapacitor.

【 授权许可】

CC BY