Citation: Feng LI, Shujuan GAO. One-step preparation and energy storage properties of MXene-doped poly(3, 4-ethylenedioxythiophene) composite electrodes[J]. Chinese Journal of Inorganic Chemistry, ;2026, 42(7): 1485-1494. doi: 10.11862/CJIC.20260019 shu

One-step preparation and energy storage properties of MXene-doped poly(3, 4-ethylenedioxythiophene) composite electrodes

Feng LI ,
Shujuan GAO ^,

Department of Chemical and Materials Engineering, Lyuliang University, Lüliang, Shanxi 033001, China

Corresponding author: Shujuan GAO, shujuangao@llu.edu.cn
Revised Date: 17 January 2026

Figures(7)

In this work, PEDOT/MXene composite electrodes (PEDOT=poly(3, 4-ethylenedioxythiophene)) were successfully fabricated via a facile one-step electrochemical polymerization approach, wherein 2D MXene (Ti₃C₂T_x) nanosheets served as templates to facilitate the dispersed growth of PEDOT on their surface. To optimize the electrochemical capacitive performance of the resultant electrodes, a systematic investigation was conducted to elucidate the effects of ten distinct electropolymerization conditions on the capacitive properties of the as-prepared PEDOT/MXene electrodes. Electrochemical measurements suggest that the incorporation of MXene remarkably enhances the electrochemical performance of PEDOT-based electrodes. This can be attributed to the fact that PEDOT is coated on the surface of MXene nanosheets, thereby achieving homogeneous dispersion of PEDOT. Notably, the electrode synthesized via the galvanostatic method at a current density of 1 mA·cm^-2 delivered the optimal capacitive performance, achieving an areal capacitance of 236.3 mF·cm^-2 at 0.5 mA·cm^-2, which was 2.3-fold higher than that of the PEDOT electrode. In terms of cycling stability, the PEDOT/MXene composite electrode retained 87.8% of its initial capacitance after 10 000 charge-discharge cycles, whereas the PEDOT electrode only maintained 42.5% of its initial capacitance.
- electrochemical capacitors,
- composite electrodes,
- electrochemical performance,
- two-dimensional materials
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