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<p>Asymmetric supercapacitors (ASCs) constructed from metal oxide–metal sulfide–carbon composites have been identified as high-performance energy storage devices due to their ability to combine fast redox kinetics with excellent electrical conductivity and structural stability. In the present study, a ternary MnFe<sub>2</sub>O<sub>4</sub>/MoS<sub>2</sub>@MWCNT composite was synthesized via a hydrothermal-ultrasonication route and employed as the positive electrode material. The MnFe<sub>2</sub>O<sub>4</sub> spinel oxide contributes rich redox activity, MoS<sub>2</sub> offers layered architecture for enhanced ion diffusion, and MWCNTs act as a conductive matrix that improves electron transport and mechanical integrity. Activated carbon (AC), with its enhanced surface area and porosity, was employed as the anode. The resulting ASC cell delivered a high energy density of 47.5 Wh kg⁻<sup>1</sup> at a power density of 750&#xa0;W kg⁻<sup>1</sup> and demonstrated stable performance over extended cycles stability with maintaining 95.9% capacitance after 10,000 cycles. This study highlights the potential of designing hybrid electrode systems by integrating transition metal oxides, sulfides and carbonaceous materials for next-generation supercapacitor applications.</p>

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Synergistic integration of MWCNT-decorated MnFe2O4/MoS2 composite electrode for high-performance asymmetric supercapacitors

  • 期刊论文

  • 发表日期：

    2025年11月1日

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  • L. Ganesh Babu,
  • P. Prasanth,
  • C. Thirumarai Selvi,
  • N. Atthikumaran,
  • T. Nithyanandhan,
  • S. Nanthakumar,
  • J. Kumaresan,
  • R. Girimurugan,
  • N. Vijayakumar

摘要

Asymmetric supercapacitors (ASCs) constructed from metal oxide–metal sulfide–carbon composites have been identified as high-performance energy storage devices due to their ability to combine fast redox kinetics with excellent electrical conductivity and structural stability. In the present study, a ternary MnFe2O4/MoS2@MWCNT composite was synthesized via a hydrothermal-ultrasonication route and employed as the positive electrode material. The MnFe2O4 spinel oxide contributes rich redox activity, MoS2 offers layered architecture for enhanced ion diffusion, and MWCNTs act as a conductive matrix that improves electron transport and mechanical integrity. Activated carbon (AC), with its enhanced surface area and porosity, was employed as the anode. The resulting ASC cell delivered a high energy density of 47.5 Wh kg⁻1 at a power density of 750 W kg⁻1 and demonstrated stable performance over extended cycles stability with maintaining 95.9% capacitance after 10,000 cycles. This study highlights the potential of designing hybrid electrode systems by integrating transition metal oxides, sulfides and carbonaceous materials for next-generation supercapacitor applications.