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Updated: Nov 3, 2025
Vapor Phase Deposition of Electroactive Poly(3,4-ethylenedioxythiophene) onto Electrospun Commodity Polymer Nanofibers
Published on: March 7, 2025
Regulating monomer assembly to enhance PEDOT capacitance performance via different oxidants
Xiao Chen1, Chunyan Zhu2, Fengxing Jiang2
1Department of Physics, Jiangxi Science and Technology Normal University, Nanchang 330013, PR China; Flexible Electronics Innovation Institute (FEII), Jiangxi Science & Technology Normal University, Nanchang, 330013, PR China.
Iron(III) tosylate (Fe(Tos)3) enhances poly(3,4-ethylenedioxythiophene) (PEDOT) performance in supercapacitors by increasing oxidation and conjugation. This leads to superior conductivity and capacitance for advanced energy storage devices.
Area of Science:
- Materials Science
- Electrochemistry
- Polymer Chemistry
Background:
- High specific capacitance in poly(3,4-ethylenedioxythiophene) (PEDOT) is crucial for high-performance supercapacitors.
- PEDOT's electrochemical properties depend on its oxidation degree and conjugated chain length.
Purpose of the Study:
- To investigate the impact of different oxidants (FeCl3, Fe(Tos)3, MoCl5) on PEDOT's molecular structure and capacitive properties.
- To identify an optimal oxidant for enhancing PEDOT-based supercapacitor performance.
Main Methods:
- Vapor phase polymerization of PEDOT using various oxidants.
- Systematic investigation of molecular chain structure and electrochemical properties.
- Evaluation of conductivity, areal capacitance, and electrochemical stability.
Main Results:
- Fe(Tos)3 significantly improved PEDOT's oxidation degree and conjugated chain length compared to FeCl3 and MoCl5.
- PEDOT/P(Fe(Tos)3) electrodes exhibited high conductivity (73 S cm-1) and areal capacitance (419 mF cm-2).
- Enhanced electrochemical stability was observed under bent conditions, attributed to strengthened inter-chain interactions.
Conclusions:
- Fe(Tos)3 is an ideal oxidant for synthesizing high-performance PEDOT electrode materials.
- The study highlights the importance of oxidant choice in tailoring PEDOT properties for supercapacitors.
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