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Here, we report the electrochemical polymerization of polyindolePolyindole (PIn) on a fluorine-doped tin oxide (FTO)Fluorine-doped Tin Oxide (FTO) conductive substrate for supercapacitorSupercapacitor applications. The FTOFluorine-doped Tin Oxide (FTO) substrate combines high transparency, electricalElectrical conductivityConductivity, mechanical strength, and thermal stability, making it highly suitable for the fabrication of thin-film active electrode materials. PIn films were prepared by electropolymerizationElectropolymerization via cyclic voltammetry and chronoamperometry in LiClO4/CH3CN electrolyte. The structural and morphological characteristics of the developed electrodes were evaluated and discussed. The electrochemical characterization of the PIn films was performed in 1 M H2SO4 electrolyte. Cyclic voltammetry (CV) was first used, followed by galvanostatic charge/discharge (GCD) and electrochemicalImpedance spectroscopy impedanceImpedance spectroscopyElectrochemical impedance spectroscopy (EIS) to investigate the electrode's electrochemical behavior. The optimal applied potential was 1.2 V vs. Ag/AgCl, yielding films with superior pseudocapacitive properties and enhanced electrochemical performanceElectrochemical performance. At this potential, the PIn film delivered a specific capacitance of 230.21 F.g−1 at a current density of 0.5 A.g−1 and an energy density of 115.42 Wh.kg−1. The good pseudocapacitive performance of the polyindolePolyindole films indicates their applicability in future energy devices.

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Electropolymerization and Characterization of Polyindole Films on Fluorine-Doped Tin Oxide Substrates for Use in Supercapacitor Applications

  • 会议论文

  • 发表日期：

    2026年

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  • Boukary Diallo,
  • Mohammed Lasri,
  • Othmane Zakir,
  • Rachid Idouhli,
  • Mohamed Aklalouch,
  • Burak Dikici,
  • Mohamed Daoud,
  • Mohy Eddine Khadiri,
  • Abdesselam Abouelfida

摘要

Here, we report the electrochemical polymerization of polyindolePolyindole (PIn) on a fluorine-doped tin oxide (FTO)Fluorine-doped Tin Oxide (FTO) conductive substrate for supercapacitorSupercapacitor applications. The FTOFluorine-doped Tin Oxide (FTO) substrate combines high transparency, electricalElectrical conductivityConductivity, mechanical strength, and thermal stability, making it highly suitable for the fabrication of thin-film active electrode materials. PIn films were prepared by electropolymerizationElectropolymerization via cyclic voltammetry and chronoamperometry in LiClO4/CH3CN electrolyte. The structural and morphological characteristics of the developed electrodes were evaluated and discussed. The electrochemical characterization of the PIn films was performed in 1 M H2SO4 electrolyte. Cyclic voltammetry (CV) was first used, followed by galvanostatic charge/discharge (GCD) and electrochemicalImpedance spectroscopy impedanceImpedance spectroscopyElectrochemical impedance spectroscopy (EIS) to investigate the electrode's electrochemical behavior. The optimal applied potential was 1.2 V vs. Ag/AgCl, yielding films with superior pseudocapacitive properties and enhanced electrochemical performanceElectrochemical performance. At this potential, the PIn film delivered a specific capacitance of 230.21 F.g−1 at a current density of 0.5 A.g−1 and an energy density of 115.42 Wh.kg−1. The good pseudocapacitive performance of the polyindolePolyindole films indicates their applicability in future energy devices.