Impact of electrochemical overoxidation on the performance metrics of PEDOT films: experimental and theoretical studies
- 1School of Chemistry, Damghan University, Damghan, Iran
- 2Faculty of Chemistry, Shahrood University of Technology, Shahrood, Iran; Corresponding authors.
- 3School of Chemistry, Damghan University, Damghan, Iran; Corresponding authors.
Abstract
In this work, the electrochemical performance and surface characteristics of PEDOT and overoxidized PEDOT films were systematically investigated. Cyclic voltammetry (CV) results revealed that the PEDOT-modified electrode exhibited both the higher oxidation currents and the lower oxidation potentials compared to the overoxidized PEDOT-electrode, indicating enhanced electron transfer and catalytic efficiency. Whereas, overoxidation resulted in a significant reduction in current, reflecting a decrease in active area and diminished sensitivity. Scanning Electron Microscopy (SEM) confirmed these findings by showing loss of porosity and reduced surface area in the overoxidized PEDOT film. Overall, the combined CV and SEM analyses demonstrate that moderate PEDOT modification offers optimal electrochemical activity and structural integrity for sensing applications. The theoretical results indicated that the difference in current density between overoxidized and non-overoxidized PEDOT structures was consistent with the corresponding experimental data. In addition, the sheet resistance of the synthesized polymer films was evaluated using the four-point probe technique. Results revealed that PEDOT exhibited a lower sheet resistance than overoxidized PEDOT, indicating higher electrical conductivity and more efficient charge transport properties.
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BibTeX
@article{hosseini2026impact,
title = {{Impact of electrochemical overoxidation on the performance metrics of PEDOT films: experimental and theoretical studies}},
author = {Mobina Hosseini and Hossein Nikoofard and Davood Ajloo},
journal = {Results in Chemistry},
year = {2026},
month = oct,
doi = {10.1016/j.rechem.2026.104009},
url = {https://doi.org/10.1016/j.rechem.2026.104009},
note = {CC BY},
}
RIS
TY - JOUR
TI - Impact of electrochemical overoxidation on the performance metrics of PEDOT films: experimental and theoretical studies
AU - Mobina Hosseini
AU - Hossein Nikoofard
AU - Davood Ajloo
PY - 2026
DA - 2026/10/30
JO - Results in Chemistry
DO - 10.1016/j.rechem.2026.104009
UR - https://doi.org/10.1016/j.rechem.2026.104009
AB - In this work, the electrochemical performance and surface characteristics of PEDOT and overoxidized PEDOT films were systematically investigated. Cyclic voltammetry (CV) results revealed that the PEDOT-modified electrode exhibited both the higher oxidation currents and the lower oxidation potentials compared to the overoxidized PEDOT-electrode, indicating enhanced electron transfer and catalytic efficiency. Whereas, overoxidation resulted in a significant reduction in current, reflecting a decrease in active area and diminished sensitivity. Scanning Electron Microscopy (SEM) confirmed these findings by showing loss of porosity and reduced surface area in the overoxidized PEDOT film. Overall, the combined CV and SEM analyses demonstrate that moderate PEDOT modification offers optimal electrochemical activity and structural integrity for sensing applications. The theoretical results indicated that the difference in current density between overoxidized and non-overoxidized PEDOT structures was consistent with the corresponding experimental data. In addition, the sheet resistance of the synthesized polymer films was evaluated using the four-point probe technique. Results revealed that PEDOT exhibited a lower sheet resistance than overoxidized PEDOT, indicating higher electrical conductivity and more efficient charge transport properties.
SN - 2211-7156
ER -