Sonochemical synthesis of Ag2WO4/RGO-based nanocomposite as a potential material for supercapacitors electrodes
| Autor: | Esmail Sohouli, Mehdi Rahimi-Nasrabadi, Masoumeh Ghalkhani, Zolfaghar Rezvani, Kourosh Adib, Hamid Reza Naderi |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Supercapacitor Nanocomposite Materials science Graphene Process Chemistry and Technology Nanoparticle 02 engineering and technology 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Dielectric spectroscopy Chemical engineering law 0103 physical sciences Electrode Materials Chemistry Ceramics and Composites Cyclic voltammetry 0210 nano-technology |
| Zdroj: | Ceramics International. 47:14075-14086 |
| ISSN: | 0272-8842 |
| Popis: | The goal of this research is to synthesize a reduced graphene oxide/silver tungstate (Ag2WO4/RGO)-based nanocomposite by the incorporation of the Ag2WO4 nanoparticles into the RGO nanosheets through sonochemical method. The structural, chemical, and morphological properties of the prepared Ag2WO4/RGO nanocomposite were characterized by field emission scanning electron microscopy (FE-SEM), Fourier transform-infrared spectroscopy (FT-IR), and X-ray diffraction (XRD) methods. The Ag2WO4/RGO nanocomposite was utilized as an efficient modifier for the supercapacitor electrodes. The electrochemical performance of Ag2WO4/RGO-based electrodes was investigated in 2 M H2SO4 solution by the electrochemical techniques such as continuous cyclic voltammetry (CCV), cyclic voltammetry (CV), galvanostatic charge/discharge, and electrochemical impedance spectroscopy (EIS). The Ag2WO4/RGO-based electrodes presented a specific capacitance of 534 F/g at the scan rate of 5 mV/s and energy density of 68 Wh/kg. CCV assessments of Ag2WO4/RGO-based electrodes showed exceptional cyclic stability (retention of 102.1% of its primary specific capacitance after 5000 cycles) and mechanical stability. The outstanding performance of the Ag2WO4/RGO nanocomposite revealed that it possesses the merits of both of Ag2WO4 nanoparticles and RGO nanosheets and confirms its suitability for the construction of the supercapacitors. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect