High performance pliable supercapacitor fabricated using activated carbon nanospheres intercalated into boron nitride nanoplates by pulsed laser ablation technique
| Autor: | Talal F. Qahtan, Mohammed A. Gondal, Muhammad Rauf ul Hassan, M.A. Dastageer, Ayhan Bozkurt, Emre Cevik |
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| Rok vydání: | 2020 |
| Předmět: |
Energy storage
Activated carbon General Chemical Engineering 02 engineering and technology Electrolyte 010402 general chemistry 01 natural sciences Capacitance lcsh:Chemistry chemistry.chemical_compound X-ray photoelectron spectroscopy Supercapacitor Nanocomposite Chemistry Pulsed laser ablation General Chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences Dielectric spectroscopy Boron nitride lcsh:QD1-999 Chemical engineering Electrode Cyclic voltammetry 0210 nano-technology |
| Zdroj: | Arabian Journal of Chemistry, Vol 13, Iss 8, Pp 6696-6707 (2020) |
| ISSN: | 1878-5352 |
| DOI: | 10.1016/j.arabjc.2020.06.024 |
| Popis: | Pliable supercapacitor, yielding specific capacitance (Cs) and energy density as high as 348 F g−1 and 48.3 Wh Kg−1 respectively was fabricated using modified activated carbon electrodes. The nanospheres of activated carbon (AC) were anchored on the nanoplates of boron nitride (BN) by employing the facile technique of pulsed laser ablation in liquid (PLAL) using 532 nm focused laser beam. Four different variants of electrode materials were synthesized by varying the weight percentage (1%, 3%, 5% and 10%) of BN in AC in the PLAL precursor solution. The morphological characteristics, the elemental composition and the structural analysis of the synthesized electrode materials were studied respectively by FESEM, XPS and XRD. The morphological studies indicated that the PLAL synthesis of the electrode materials resulted in proper intercalation of carbon nanospheres into BN nanoplates, which resulted in the observed enhanced performance of the fabricated supercapacitor. Four supercapacitors in this work were fabricated using the four variants of synthesized electrode materials in conjunction with gel polymer electrolyte (GPE). GPE are well known for their non-corrosive nature and best sealing ability to avoid any leakage that results in increasing the cycle life of the device. The performance of the fabricated supercapacitors was evaluated using cyclic voltammetry (CV), galvanostatic charge discharge (GCD) measurement and electrochemical impedance spectroscopy (EIS). The results indicate that the supercapacitor fabricated using 3% BN in AC as electrode material manifested the best specific capacitance and energy density. Also it was found that the supercapacitor maintained 85% of its initial capacitance even after 5000 charge/discharge cycles. |
| Databáze: | OpenAIRE |
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