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<p>Electrode materials determine the performance of supercapacitors, and transition metal sulfides are one of the suitable electrode materials due to their high theoretical capacity, high electrical conductivity, high electrochemical activity, low electronegativity, and good compatibility. CuFeS<sub>2</sub> can be used as an electrode material with excellent performance in supercapacitors; it is endowed with excellent electrochemical performance and a wide range of electrochemical applications due to the multiple oxidation states of multiple elements, as well as high electrical conductivity, high redox activity, and high crystal structure volume due to the unique crystal structure of tetrahedral coordination of Cu, Fe, and S. In this paper, an ultrasound-assisted hydrothermal process was employed to synthesize CuFeS<sub>2</sub> 3D nanomaterials, which is simple, fast, and stable. The syntheses were confirmed by XRD, XPS, SEM, and TEM, and scanning electron microscopy showed experimentally synthesized CuFeS<sub>2</sub> 3D nanomaterials with uniform particle size. The process yielded CuFeS<sub>2</sub> 3D nanomaterials via ultrasound-induced cavitation, continuous magnetic stirring, and autoclave reaction at 185°C for 150&#xa0;min, exhibiting good electrochemical properties and potential as electrode materials for supercapacitors.</p>

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Synthesis of CuFeS2 3D Nanomaterials by Hydrothermal Process Enhanced with Ultrasonics and Their Electrochemical Properties

  • 期刊论文

  • 发表日期：

    2025年12月29日

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  • Jialei Li,
  • Yalong Liao,
  • Min Wu,
  • Xiaobao Jia,
  • Shuangyu Yang

摘要

Electrode materials determine the performance of supercapacitors, and transition metal sulfides are one of the suitable electrode materials due to their high theoretical capacity, high electrical conductivity, high electrochemical activity, low electronegativity, and good compatibility. CuFeS2 can be used as an electrode material with excellent performance in supercapacitors; it is endowed with excellent electrochemical performance and a wide range of electrochemical applications due to the multiple oxidation states of multiple elements, as well as high electrical conductivity, high redox activity, and high crystal structure volume due to the unique crystal structure of tetrahedral coordination of Cu, Fe, and S. In this paper, an ultrasound-assisted hydrothermal process was employed to synthesize CuFeS2 3D nanomaterials, which is simple, fast, and stable. The syntheses were confirmed by XRD, XPS, SEM, and TEM, and scanning electron microscopy showed experimentally synthesized CuFeS2 3D nanomaterials with uniform particle size. The process yielded CuFeS2 3D nanomaterials via ultrasound-induced cavitation, continuous magnetic stirring, and autoclave reaction at 185°C for 150 min, exhibiting good electrochemical properties and potential as electrode materials for supercapacitors.