Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10625768 | Ceramics International | 2014 | 6 Pages |
Abstract
In this work, we developed a simple and cost-effective approach to prepare the hierarchical NiO/CuO nanocomposite without any surfactant. The morphology and structure of the hybrid nanostructure was examined by focus ion beam scanning electron microscopy (FIB/SEM), X-ray diffraction spectroscopy (XRD) and high-resolution transmission electron microscopy (HRTEM). Furthermore, the electrochemical properties of the hierarchical NiO/CuO nanocomposite electrodes were elucidated by cyclic voltammograms, galvanostatic charge/discharge tests and electrochemical impedance spectroscopy in 6Â M KOH electrolyte. The electrochemical results demonstrated that this unique NiO/CuO nanostructure exhibited a specific capacitance of 280Â FÂ gâ1 and excellent cycling stability (91.4% retention after 3000 cycles). The remarkable electrochemical performance coupled with the facile synthesis of the hierarchical NiO/CuO nanocomposite indicated the great application potential in supercapacitors.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Ming Huang, Fei Li, Yu Xin Zhang, Bo Li, Xing Gao,