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<p>Titanium carbide (Ti<sub>3</sub>C<sub>2</sub>), a two-dimensional material known as MXene, is a promising electrode material for supercapacitors. Herein, MXene was synthesized by etching the Ti₃AlC₂ MAX phase, followed by intercalation with polyethyleneimine (PEI). Additionally, the precursor MoS<sub>2</sub> was injected into MXenes at an early stage. The MXene and MoS<sub>2</sub>/MXene@PEI materials were characterized using X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and BET analysis techniques. Several techniques were employed to assess the electrochemical properties of MXene, MoS<sub>2</sub>/MXene, and MoS<sub>2</sub>/MXene@PEI heterostructures. Based on the results of the electrochemical experiments, it has been demonstrated that the MoS<sub>2</sub>/MXene@PEI NCs electrodes have the potential to achieve a maximum specific capacitance of 632&#xa0;F g<sup>−1</sup>. Additionally, the discharge current density of these electrodes is 1&#xa0;A g<sup>−1</sup>. Additionally, MoS<sub>2</sub> has been demonstrated to reduce the charge transfer resistance of MoS<sub>2</sub>/MXene@PEI, as indicated by the results of electrochemical impedance testing. The electrochemical performance of MoS<sub>2</sub>/MXene@PEI NCs was remarkable, particularly in terms of reversibility, cycle stability, and rate performance. The research concludes that MoS<sub>2</sub>/MXene@PEI is an excellent candidate for use as an electrode in supercapacitors.</p> Graphical Abstract <p></p>

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Advanced MXene/MoS2 nanoparticles with polyethyleneimine intercalation for asymmetric energy storage applications

  • 期刊论文

  • 发表日期：

    2025年10月24日

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  • S. Sumathy,
  • M. Parthasarathy,
  • R. Suriakarthick,
  • V. Gowthami,
  • Amanullah Fatehmulla

摘要

Titanium carbide (Ti3C2), a two-dimensional material known as MXene, is a promising electrode material for supercapacitors. Herein, MXene was synthesized by etching the Ti₃AlC₂ MAX phase, followed by intercalation with polyethyleneimine (PEI). Additionally, the precursor MoS2 was injected into MXenes at an early stage. The MXene and MoS2/MXene@PEI materials were characterized using X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and BET analysis techniques. Several techniques were employed to assess the electrochemical properties of MXene, MoS2/MXene, and MoS2/MXene@PEI heterostructures. Based on the results of the electrochemical experiments, it has been demonstrated that the MoS2/MXene@PEI NCs electrodes have the potential to achieve a maximum specific capacitance of 632 F g−1. Additionally, the discharge current density of these electrodes is 1 A g−1. Additionally, MoS2 has been demonstrated to reduce the charge transfer resistance of MoS2/MXene@PEI, as indicated by the results of electrochemical impedance testing. The electrochemical performance of MoS2/MXene@PEI NCs was remarkable, particularly in terms of reversibility, cycle stability, and rate performance. The research concludes that MoS2/MXene@PEI is an excellent candidate for use as an electrode in supercapacitors.

Graphical Abstract