Fabrication of Al2O3/IL‐Based Nanocomposite Polymer Electrolytes for Supercapacitor Application. Issue 19 (23rd May 2019)

• Record Type: Journal Article
• Authors: Gunday, Seyda Tugba; Cevik, Emre; Yusuf, Abdulmalik; Bozkurt, Ayhan
• Is Part Of: ChemistrySelect. Volume 4:Issue 19(2019)
• Page Start: 5880
• Page End: 5887
• Publication Date: 2019-05-23
• Subjects: Aluminium oxide nanoparticles -- ionic conductivity -- ionic liquid -- Sulfonated Polysulfone -- Supercapacitors.; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.201900030
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: In the present work, we investigated physical properties as well as supercapacitor application of nanocomposite polymer gel electrolytes. The polymer electrolyte (PE) consists of Ionic Liquid, (1‐Ethyl‐3‐methyl‐imidazolium tetrafluoroborate (IL)) as a softening agent, aluminum oxide (Al2 O3 ) as a nano additive and sulfonated polysulfone (SPSU) as the main polymer. The resulting nanocomposite gel polymer electrolyte structure was characterized using spectroscopic methods. Thermal characteristic properties of polymeric nanocomposites were investigated by performing differential scanning calorimetry (DSC) and terhmogravimetric analysis (TGA). Conductivity measurements of the materials were obtained between −20 °C and 100 °C at varying temperature intervals. The highest ionic conductivity values were obtained from the SPSU / 0.1 IL and SPSU / 5% Al2 O3 / 0.2 IL polymer electrolyte structures as 2.5 x10 −4 and 2.06 x10 −3 S cm −1 at 100 °C, respectively. The maximum specific capacitance value of 144 F g −1 was obtained from SPSU / 5% Al2 O3 / 0.2 IL polymer electrolyte based system at a current density of 1 A g −1 . The supercapacitor reached an energy density of 20 Wh kg −1 at a power density of 1028 W kg −1 . In addition, the supercapacitor has shown a remarkable capacitance retention with a performance loss of only about 10% after 5000 cycles. Abstract : The polymer electrolyte consists of sulfonated polysulfone (SPSU), Ionic Liquid (IL) and aluminum oxide (Al2 O3 ) as a nano additive were used to fabricate symmetrical doulbe layer supercapacitor. The specific capacitance value of 144 F g −1 was obtained from SPSU / 5% Al2 O3 / 0.2 IL system at a current density of 1 A g −1 . The supercapacitor reached an energy density of 20 Wh kg −1 at a power density of 1028 W kg −1 .