Bifacial carbon nanofoam-fibrous PEDOT composite supercapacitor in the 3-electrode configuration for electrical energy storage
| Autor: | Alok C. Rastogi, Navjot K. Sidhu |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Supercapacitor
Materials science Mechanical Engineering Carbon nanofoam Metals and Alloys chemistry.chemical_element 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Capacitance 0104 chemical sciences Electronic Optical and Magnetic Materials PEDOT:PSS chemistry Mechanics of Materials Electrode Materials Chemistry Composite material Cyclic voltammetry 0210 nano-technology Carbon |
| Zdroj: | Synthetic Metals. 219:1-10 |
| ISSN: | 0379-6779 |
| DOI: | 10.1016/j.synthmet.2016.04.012 |
| Popis: | Electrical energy storage properties of supercapacitors based on carbon nanofoam-fibrous PEDOT composite and microporous PEDOT film/graphite electrodes formed by the pulsed current electropolymerization technique are investigated. The 3-dimensional nano-architecture of the composite carbon nanofoam -fibrous PEDOT electrode exhibits high pore connectivity and electrolyte ion diffusivity. By utilizing its bifacial ion transportation ability and reduced ion diffusion impedance, a supercapacitor device in the 3-electrode configuration has been tested which shows high specific capacitance of 210.8 F g−1 as compared to 142.5 F g−1 observed for the supercapacitor in the conventional 2-electrode design. The voltage scan rate dependence shows high efficacy of the bifacial carbon nanofoam electrode in faster ion transport in the 3-electrode supercapacitor configuration. The 3-electrode supercapacitor cell shows energy density of 8.53 Wh kg−1 which is nearly 1.7 times higher than the energy density of the 2-electrode supercapacitor cell. The power density of ∼19.7 kW kg−1 for the 3-electrode supercapacitor cell is also superior as the 2-electrode supercapacitor exhibit a typical value of 11.8 kW kg−1. |
| Databáze: | OpenAIRE |
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