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Electrode for a Supercapacitor Based on Electrochemically Synthesized Multilayer Graphene Oxide
- Source :
- Russian Journal of Applied Chemistry. 94:370-378
- Publication Year :
- 2021
- Publisher :
- Pleiades Publishing Ltd, 2021.
-
Abstract
- 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 μm2. 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.
- Subjects :
- Supercapacitor
Graphene
General Chemical Engineering
Oxide
02 engineering and technology
General Chemistry
010402 general chemistry
021001 nanoscience & nanotechnology
Electrochemistry
01 natural sciences
0104 chemical sciences
law.invention
chemistry.chemical_compound
chemistry
Chemical engineering
law
Electrode
Specific energy
Graphite
0210 nano-technology
Current density
Subjects
Details
- ISSN :
- 16083296 and 10704272
- Volume :
- 94
- Database :
- OpenAIRE
- Journal :
- Russian Journal of Applied Chemistry
- Accession number :
- edsair.doi...........dedc578e95406f32df0ce870e960b124