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<p>The analysis of gel electrolytes synthesized from PMMA using dimethylformamide (DMF) as solvent and incorporated with LiTFSI and TiO<sub>2</sub> nanofiller is reported. The primary aim is to study the suitability of the electrolyte for application in supercapacitor. The room temperature conductivity for PMMA-LiTFSI without TiO<sub>2</sub> was found to be 4.35 × 10<sup>−3</sup> S cm<sup>−1</sup>. Upon the incorporation of an optimized concentration of TiO<sub>2</sub>, the conductivity increased to 5.40 × 10<sup>−3</sup> S cm<sup>−1</sup>, accompanied by a significant improvement in dielectric properties. Analysis from FTIR spectroscopy revealed the influence of TiO<sub>2</sub> concentration on the transport properties of the electrolytes.&#xa0;The effect of TiO<sub>2</sub> concentration on the crystallinity was studied using XRD method. PMMA-LiTFSI with the optimized concentration of TiO<sub>2</sub> exhibited a&#xa0;glass transition temperature&#xa0;(<i>T</i><sub>g</sub>) of − 17.35&#xa0;°C.&#xa0;The suitability of PMMA-LiTFSI-TiO<sub>2</sub> as electrolyte in an EDLC was tested using electrochemical impedance spectroscopy and cyclic voltammetry measurements. The findings from this study suggest that the optimized PMMA-LiTFSI-TiO<sub>2</sub> exhibits promising characteristics for application in supercapacitor.</p>

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Effect of TiO2 on the characteristics of PMMA-LiTFSI-based gel polymer electrolyte for electrical double layer capacitor application

  • 期刊论文

  • 发表日期：

    2026年7月13日

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  • M. F. Shukur,
  • J. C. Chia,
  • Mohammad Obaidur Rahman,
  • N. A. Shamsuri,
  • M. F. Aziz

摘要

The analysis of gel electrolytes synthesized from PMMA using dimethylformamide (DMF) as solvent and incorporated with LiTFSI and TiO2 nanofiller is reported. The primary aim is to study the suitability of the electrolyte for application in supercapacitor. The room temperature conductivity for PMMA-LiTFSI without TiO2 was found to be 4.35 × 10−3 S cm−1. Upon the incorporation of an optimized concentration of TiO2, the conductivity increased to 5.40 × 10−3 S cm−1, accompanied by a significant improvement in dielectric properties. Analysis from FTIR spectroscopy revealed the influence of TiO2 concentration on the transport properties of the electrolytes. The effect of TiO2 concentration on the crystallinity was studied using XRD method. PMMA-LiTFSI with the optimized concentration of TiO2 exhibited a glass transition temperature (Tg) of − 17.35 °C. The suitability of PMMA-LiTFSI-TiO2 as electrolyte in an EDLC was tested using electrochemical impedance spectroscopy and cyclic voltammetry measurements. The findings from this study suggest that the optimized PMMA-LiTFSI-TiO2 exhibits promising characteristics for application in supercapacitor.