Electrode for a Supercapacitor Based on Electrochemically Synthesized Multilayer Graphene Oxide
Multilayer graphene oxide was synthesized by anodic oxidation of dispersed graphite, and the efficiency of its use as an electrode material for a supercapacitor was shown. In an alcohol suspension, the thickness of multilayer graphene oxide particles is less than 0.1 μm with an area of more than 100...
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Veröffentlicht in: | Russian journal of applied chemistry 2021-03, Vol.94 (3), p.370-378 |
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Hauptverfasser: | , , , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Multilayer graphene oxide was synthesized by anodic oxidation of dispersed graphite, and the efficiency of its use as an electrode material for a supercapacitor was shown. In an alcohol suspension, the thickness of multilayer graphene oxide particles is less than 0.1 μm with an area of more than 100 μm
2
. The multilayer graphene oxide electrode has a high specific capacity of 107 F g
–1
and a high charge retention rate of 97% after 5000 cycles at a current of 2 A g
–1
. The multilayer graphene oxide electrode demonstrated a maximum specific energy of 8.7 W h kg
–1
at a current density of 0.1 A g
–1
and a maximum power of 2291.1 W kg
–1
at a current density of 4 A g
–1
. The impedance data at various DC voltages showed that after 5000 cycles, the charge transfer resistance increases by 26%. It was found that multilayer graphene oxide synthesized by the electrochemical method is a promising electrode material for producing a symmetric supercapacitor. |
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ISSN: | 1070-4272 1608-3296 |
DOI: | 10.1134/S1070427221030149 |