Boron-incorporated Sulfonated polysulfone/polyphosphoric acid electrolytes for supercapacitor application |
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Authors: | Emre Cevik Seyda T Günday Abdulmalik Yusuf Munirah A Almessiere |
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Institution: | 1. Institute for Research &2. Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia;3. Department of Physics, Institute for Research &4. Department of Bio &5. Nano Technology Engineering, Istanbul University, Istanbul, Turkey;6. College of Science, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia |
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Abstract: | In the present work, boron-doped multicomponent gel polymer electrolytes composed of host polymer, sulfonated polysulfone (SPSU) and the additives; ionic liquid, 1-ethyl-3-methyl-imidazolium tetrafluoroborate (IL), H3BO3, polyphosphoric acid (PPA) were prepared. Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA) techniques were used to characterize the sulfonated polysulfone-based electrolytes. Ion conductivity of these gel electrolytes were studied by dielectric impedance analyzer within the temperature from ?20 to 100°C. The ionic conductivity of the SPSU-5IL-1PPA and SPSU-5IL-1H3BO3-1PPA were measured as 4.8 × 10?3 and 9 × 10?4 S cm?1, respectively. Supercapacitor having activated carbon-based composite electrode and electrolyte was constructed with the configuration: Al/C/electrolyte/C/Al. The electrochemical properties and ion transfer characteristics of the supercapacitor were investigated by the cyclic voltammetry (CV). Galvanostatic charge—discharge experiments exhibited good electrochemical reversibility and produced a specific capacitance value of 120 F g?1 at 1 A g?1. The symmetric supercapacitor system was retained almost 85% of its initial activity after 1000 cycle. |
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Keywords: | Sulfonated polysulfone polymer electrolyte supercapacitor ionic liquid boric acid |
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