High pressure homogenization treatment on graphene oxide and its electrochemical energy storage performance
| Autor: | Jiang Li, Chen Bing, Hu Ailin, Wu Jun, Jiang Qi, Lu Xiaoying |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Oxide General Physics and Astronomy 02 engineering and technology Electrolyte 010402 general chemistry Electrochemistry 01 natural sciences Homogenization (chemistry) law.invention symbols.namesake chemistry.chemical_compound law Desorption Supercapacitor Graphene Surfaces and Interfaces General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Surfaces Coatings and Films Chemical engineering chemistry symbols 0210 nano-technology Raman spectroscopy |
| Zdroj: | Applied Surface Science. 493:441-447 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2019.07.046 |
| Popis: | In view of the fact that the electrochemical capacity of graphene (G) prepared by the Hummers method is not high, a high pressure homogenization treatment was used to modify the structure of graphene oxide (GO) to obtain G with better electrochemical performance. The obtained samples were characterized by UV–Vis spectrum, X-ray diffraction, Raman spectrum and nitrogen adsorption desorption tests. The results show that high pressure homogenization treatment can reduce the number of GO layer, and thus make the GO solution have better dispersion and homogeneity. At the same time, the defect degree of the obtained GO is improved. After further reduction, its electrochemical capacity performance has been greatly improved (from the 80 to 188F.g −1 in organic electrolyte) when it was assembled into supercapacitor, indicating that high pressure homogenization treatment can effectively improve the GO (G) electrochemical energy storage performance. |
| Databáze: | OpenAIRE |
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