Construction and Application of nanocellulose/graphene/MnO2 three-dimensional composites as potential electrode materials for supercapacitors
| Autor: | Qing-Jin Fu, Yan-Yun Wang, Chunli Yao, Xiao Ning, Yuan-Yuan Bai |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Supercapacitor Materials science Graphene Oxide Aerogel Condensed Matter Physics 01 natural sciences Capacitance Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Nanocellulose chemistry.chemical_compound chemistry Chemical engineering law 0103 physical sciences Electrode Electrical and Electronic Engineering Ternary operation |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 31:1236-1246 |
| ISSN: | 1573-482X 0957-4522 |
| DOI: | 10.1007/s10854-019-02635-9 |
| Popis: | The research on graphene–nanocellulose-based electrodes in supercapacitors has attracted more and more attention. We have innovatively prepared a carbon–biomass–metal oxide ternary aerogel electrode using a green hydrothermal method, successfully combining a graphene–nanocellulose–manganese dioxide electrode (MCGA) by loading MnO2 metal particles into a three-dimensional porous aerogel composed of graphene and nanocellulose. It is found that when the mass ratio of graphene, nanocellulose and MnO2 is 1:1:4, the obtained aerogel electrode MCGA1:1:4 shows the best electrochemical performance. The MCGA1:1:4 electrode exhibits a high specific capacitance of 212.73 F g−1 at 5 mV s−1 and extreme stability of 86.5% capacitance retention ratio after 5000 cycles at 2 A g−1. This ternary hybrid electrode based on biomass, carbon and metal oxides may become a trend in the development of high-performance supercapacitors. |
| Databáze: | OpenAIRE |
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