Copper oxide/mesoporous carbon nanocomposite synthesis, morphology and electrochemical properties for gel polymer-based asymmetric supercapacitors
| Autor: | B. Saravanakumar, Chandran Radhakrishnan, Allen J. Britten, Rajendran Kaliaperumal, Martin Mkandawire, Murugan Ramasamy |
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| Rok vydání: | 2019 |
| Předmět: |
Supercapacitor
Copper oxide Nanocomposite General Chemical Engineering Oxide chemistry.chemical_element 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 7. Clean energy 0104 chemical sciences Analytical Chemistry chemistry.chemical_compound chemistry Chemical engineering Electrode 0210 nano-technology Carbon |
| Zdroj: | Journal of Electroanalytical Chemistry. 852:113504 |
| ISSN: | 1572-6657 |
| DOI: | 10.1016/j.jelechem.2019.113504 |
| Popis: | A novel nanocomposite was synthesized by combining copper oxide with mesoporous carbon (CuO/MPC) and tested for potential applications as a supercapacitor electrode. Due to the presence of highly conductive carbon, this CuO/MPC nanocomposite is expected to provide additional pathways and more electro-active sites for ion diffusion than a metal oxide electrode alone. Indeed, the CuO/MPC electrode exhibits superior supercapacitive features including the specific capacitance of 616 F g−1 at a current density of 1 A g−1, and better rate capacity and cyclic stability. Further, an asymmetric supercapacitor cell was assembled using the CuO/MPC composite with activated carbon as electrodes, and gel polymer (PVA-KOH) as electrolyte. This asymmetric device displays higher electrochemical performance with an energy density of 26.6 W h kg−1 and a power density of 438 W kg−1. This device holds 69% of initial capacitance after 5000 cycles. These results provide a foundation for innovation of next generation energy storage device to fulfil the future demand. |
| Databáze: | OpenAIRE |
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