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<p>With distinct properties such as high electrical conductivity, excellent electrochemical activity, and economic and environmental stability, Polypyrrole (PPy) (conductive polymer) is utilized in supercapacitor applications. However, it found that the consequences of low mobility, structural stability, and rapid capacitance influence and reduce the overall performance of supercapacitors. The research objective is to assess the impact of varying TiO₂ compositions (PPy:TiO₂ = 90:10, 80:20, 70:30, and 60:40) on the electrical, optical, and electrochemical properties of the composite films. The films were fabricated via in-situ polymerization with a uniform thickness of 500&#xa0;nm. The study systematically analyzes the potential of PPy films incorporated with TiO₂ for supercapacitor applications. The results revealed that the 70:30 ratios of PPy:TiO<sub>2</sub> provided high energy storage capacity and optical transparency with an optimal balance between charge storage and electrical properties. The 70:30 ratios of PPy:TiO<sub>2</sub> showed enhanced electrochemical properties with capacitance of 580F/g, energy density value of 47 Wh/kg, and coulombic efficiency of 97.3%. The conductivity was measured as 3.4 S/cm, sheet resistance as 125 Ω, and work function as 5.07&#xa0;eV. The XRD results showed a 17.6&#xa0;nm crystalline size with an average optical transparency of 68%. These findings highlight the potential of 30% TiO2-reinforced 70% PPy thin films as an efficient material for next-generation energy storage devices.</p> Graphical Abstract <p></p>

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High charge mobility and energy storage performance behaviour of Polypyrrole conductive thin film featured with titanium dioxide

  • 期刊论文

  • 发表日期：

    2025年12月10日

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  • M. Aruna,
  • Nagabhooshanam Nagarajan,
  • Rintu Kumar,
  • Mamata Chahar,
  • T. Sudhakar,
  • N. B. C. S. N. Murthy,
  • Ramya Maranan,
  • M. Murali,
  • S. Sathiyamurthy

摘要

With distinct properties such as high electrical conductivity, excellent electrochemical activity, and economic and environmental stability, Polypyrrole (PPy) (conductive polymer) is utilized in supercapacitor applications. However, it found that the consequences of low mobility, structural stability, and rapid capacitance influence and reduce the overall performance of supercapacitors. The research objective is to assess the impact of varying TiO₂ compositions (PPy:TiO₂ = 90:10, 80:20, 70:30, and 60:40) on the electrical, optical, and electrochemical properties of the composite films. The films were fabricated via in-situ polymerization with a uniform thickness of 500 nm. The study systematically analyzes the potential of PPy films incorporated with TiO₂ for supercapacitor applications. The results revealed that the 70:30 ratios of PPy:TiO2 provided high energy storage capacity and optical transparency with an optimal balance between charge storage and electrical properties. The 70:30 ratios of PPy:TiO2 showed enhanced electrochemical properties with capacitance of 580F/g, energy density value of 47 Wh/kg, and coulombic efficiency of 97.3%. The conductivity was measured as 3.4 S/cm, sheet resistance as 125 Ω, and work function as 5.07 eV. The XRD results showed a 17.6 nm crystalline size with an average optical transparency of 68%. These findings highlight the potential of 30% TiO2-reinforced 70% PPy thin films as an efficient material for next-generation energy storage devices.

Graphical Abstract