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<p>In this study, a low-cost co-precipitation was used to prepare Cr<sub>2</sub>O<sub>3</sub> − ZrO<sub>2</sub> − rGO (CZG) composite and its was loaded with a poly(3,4 − ethylenedioxythiophene): polystyrene sulfonate using simple chemical oxidation polymerization process to synthesize a novel quaternary composite of PEDOT: PSS@CZG (PCZG) electrode material. Structural, morphological, elemental, and compositional analyses of the prepared samples were performed using different techniques. The electrochemical properties of electrode material were evaluated for use in supercapacitors using two- and three-electrode systems. The optimized PCZG electrode revealed the highest specific capacitance of 720.25&#xa0;F.g<sup>−1</sup> at 1.0&#xa0;A.g<sup>−1</sup> current density and showed 39.7 Wh.kg<sup>−1</sup> energy density at 365.6&#xa0;W.kg<sup>−1</sup> power density. Capacitance retention of 90.9% was achieved after 8000 cycles. After assembling PCZG//AC ASC device, the formed supercapacitor device exhibits a specific capacitance of 282.7&#xa0;F.g<sup>−1</sup> at 1.0&#xa0;A.g<sup>−1</sup>. The device exhibits excellent electrochemical stability with 85.7% capacitance retention after 8000 charging–discharging cycles.</p>

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Electrochemical Performance Evaluation of Poly(3,4-Ethylenedioxythiophene)-Functionalized Cr2O3−ZrO2−rGO Composite Supercapacitor

  • 期刊论文

  • 发表日期：

    2025年8月23日

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  • Imen Benchikh,
  • Ghadah M. Al-Senani,
  • Salhah D. Al-Qahtani,
  • Mohamed Kiari,
  • Lilia Sabantina,
  • Abdelghani Benyoucef

摘要

In this study, a low-cost co-precipitation was used to prepare Cr2O3 − ZrO2 − rGO (CZG) composite and its was loaded with a poly(3,4 − ethylenedioxythiophene): polystyrene sulfonate using simple chemical oxidation polymerization process to synthesize a novel quaternary composite of PEDOT: PSS@CZG (PCZG) electrode material. Structural, morphological, elemental, and compositional analyses of the prepared samples were performed using different techniques. The electrochemical properties of electrode material were evaluated for use in supercapacitors using two- and three-electrode systems. The optimized PCZG electrode revealed the highest specific capacitance of 720.25 F.g−1 at 1.0 A.g−1 current density and showed 39.7 Wh.kg−1 energy density at 365.6 W.kg−1 power density. Capacitance retention of 90.9% was achieved after 8000 cycles. After assembling PCZG//AC ASC device, the formed supercapacitor device exhibits a specific capacitance of 282.7 F.g−1 at 1.0 A.g−1. The device exhibits excellent electrochemical stability with 85.7% capacitance retention after 8000 charging–discharging cycles.