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<p>Transition metal sulfides and their composites are garnering interest as electrode materials in energy storage appliances because of their exceptional features, including high conductivity, substantial surface area, and porosity. Here is an assessment of the electrochemical performance of the MoS₂/Fe₃O₄ binary composite in asymmetric supercapacitor configurations having weight ratios of (1:1) and (3:7). A simple hydrothermal method is applied to synthesize the MoS₂/Fe₃O₄ binary compound. While Fe₃O₄ is generated in the form of nanosheets, many crystalline composites consisting of MoS₂ organized in a flower-petal-like configuration are revealed by structural and morphological investigation. In a three-electrode setup, MoS<sub>2</sub>/Fe<sub>3</sub>O<sub>4</sub> (1:1) exhibits the highest specific capacitance of all four electrodes, i.e., MoS<sub>2</sub>, Fe<sub>3</sub>O<sub>4</sub>, MoS<sub>2</sub>/Fe<sub>3</sub>O<sub>4</sub> (1:1), and MoS<sub>2</sub>/Fe<sub>3</sub>O<sub>4</sub> (3:7), delivering 390&#xa0;F g<sup>-1</sup> at 1&#xa0;A g<sup>-1</sup>. It also exhibits exceptional cycling stability (88%, 10000 cycles) at 4&#xa0;A g⁻¹ in ASC. One important factor contributing to the enhanced performance over the other electrodes is the mono-phased, mesoporous structure, it may be deduced. Moreover, a 100% improvement in charge-discharge characteristics has been noted in the (1:1) ratio, which is attributed to reduced activation energy and quicker ion dynamics brought about by the synergistic actions of Mo<sup>+ 4</sup> and Fe<sup>+ 3</sup>. A considerable decrease in interfacial impedances, as revealed by the impedance spectroscopic investigation, results in a better capacitance effect that is enhanced by favorable electrolytic charge dynamics. In the asymmetric design, the device achieves an improved energy density of 36 Wh kg⁻¹ and a power density of 4500&#xa0;W kg⁻¹. Consequently, the binary MoS₂/Fe₃O₄ device combination appears to be an outstanding option for energy storage devices functioning within a potential range of (-0.8–0.7&#xa0;V) (1.5&#xa0;V).</p> Graphical abstract <p></p>

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Investigating the potential use of Fe3O4-supported MoS2-based nanocomposite as the electrochemical effectuation electrode for supercapacitors application

  • 期刊论文

  • 发表日期：

    2026年1月3日

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  • A. Wahab M. A. Hussein,
  • Lubna Aamir,
  • Muhammad Tauseef Qureshi,
  • Abdul Moiz Mohammed,
  • Ghazala Yunus,
  • Ala’a Nowara,
  • Dost Muhammad,
  • Syed Hatim Shah,
  • Nisar Ali,
  • Mohammad M. Al-Hinaai,
  • Rayya Ahmed Al Balushi,
  • Thuraya Al-Harthy

摘要

Transition metal sulfides and their composites are garnering interest as electrode materials in energy storage appliances because of their exceptional features, including high conductivity, substantial surface area, and porosity. Here is an assessment of the electrochemical performance of the MoS₂/Fe₃O₄ binary composite in asymmetric supercapacitor configurations having weight ratios of (1:1) and (3:7). A simple hydrothermal method is applied to synthesize the MoS₂/Fe₃O₄ binary compound. While Fe₃O₄ is generated in the form of nanosheets, many crystalline composites consisting of MoS₂ organized in a flower-petal-like configuration are revealed by structural and morphological investigation. In a three-electrode setup, MoS2/Fe3O4 (1:1) exhibits the highest specific capacitance of all four electrodes, i.e., MoS2, Fe3O4, MoS2/Fe3O4 (1:1), and MoS2/Fe3O4 (3:7), delivering 390 F g-1 at 1 A g-1. It also exhibits exceptional cycling stability (88%, 10000 cycles) at 4 A g⁻¹ in ASC. One important factor contributing to the enhanced performance over the other electrodes is the mono-phased, mesoporous structure, it may be deduced. Moreover, a 100% improvement in charge-discharge characteristics has been noted in the (1:1) ratio, which is attributed to reduced activation energy and quicker ion dynamics brought about by the synergistic actions of Mo+ 4 and Fe+ 3. A considerable decrease in interfacial impedances, as revealed by the impedance spectroscopic investigation, results in a better capacitance effect that is enhanced by favorable electrolytic charge dynamics. In the asymmetric design, the device achieves an improved energy density of 36 Wh kg⁻¹ and a power density of 4500 W kg⁻¹. Consequently, the binary MoS₂/Fe₃O₄ device combination appears to be an outstanding option for energy storage devices functioning within a potential range of (-0.8–0.7 V) (1.5 V).

Graphical abstract