Impact of morphological variation by phase-oriented MnO2-based hierarchical ternary composites for the fabrication of solid-state symmetric supercapacitor
| Autor: | Aruchamy Gowrisankar, Antonette Luciana Sherryn, T. Selvaraju |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Supercapacitor
Materials science Nanocomposite General Chemical Engineering General Engineering General Physics and Astronomy 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Polypyrrole 01 natural sciences Capacitance 0104 chemical sciences chemistry.chemical_compound chemistry Electrode General Materials Science Composite material 0210 nano-technology Ternary operation Current density Power density |
| Zdroj: | Ionics. 26:2563-2579 |
| ISSN: | 1862-0760 0947-7047 |
| DOI: | 10.1007/s11581-019-03359-w |
| Popis: | In this study, we claimed a two-step strategy to prepare an inexpensive carbon sphere (CS) from sugarcane bagasse followed by polypyrrole (PPy) incorporation to obtain CPP (CS/PPy) nanocomposites. Subsequently, various phase-oriented MnO2 nanostructures have been introduced at CPP to obtain ternary hybrid CS/PPy/MnO2 (CPPM-1, CPPM-2, and CPPM-3) nanocomposites with ease. CPPM-1 nanocomposite-loaded electrode exhibits high capacitance of 1052.5 F/g at 0.5 A/g current density in three-electrode system. Many efforts have been devoted to develop a unique solid-state symmetric supercapacitor using CPPM-1 nanocomposites separated by solid electrolytic film (PVA-H2SO4) which shows a rapid charging and slow discharging in 60 s and 240 s, respectively. An excellent energy density of 10.4 Wh/kg was maintained at power density of 2000 W/kg in the current density of 5 A/g along with high cyclic stability as capacitance retention up to 92.3% after 5000 cycles at CPPM-1-based solid-state symmetric supercapacitor. |
| Databáze: | OpenAIRE |
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