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<p>Supercapacitors (SC<sub>s</sub>) have drawn a lot of attention in response to the energy crisis and even environmental harm. The optimal composition and structure of transition bimetallic sulphides make them suitable materials for applications in hybrid supercapacitors. Here, a hydrothermal method was employed to create the bimetallic spinel sulphide ZnCr<sub>2</sub>S<sub>4</sub>/rGO. To find out the characterizations of electrode material, a number of techniques have been used, such as galvanostatic charge discharge and electrochemical impedance spectroscopy, along with cyclic voltammetry. The structure of the ZnCr<sub>2</sub>S<sub>4</sub>/rGO electrode, which has a large active surface and good conductivity, is responsible for its superior electrochemical performance. The ability of ZnCr<sub>2</sub>S<sub>4</sub>/rGO is further improved by the synergistic interaction among the ZnCr<sub>2</sub>S<sub>4</sub> and rGO components. Electrochemical tests indicated that ZnCr<sub>2</sub>S<sub>4</sub>/rGO had better specific capacitance (<i>C</i><sub><i>s</i></sub>) of 837.9 F/g in comparison with ZnCr<sub>2</sub>S<sub>4</sub>, which is 517.3 F/g at 1 A/g. Consequently, ZnCr<sub>2</sub>S<sub>4</sub>/rGO (1:1) nanocomposite has a bright future in energy storage applications.</p>

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Fabrication of ZnCr2S4 and ZnCr2S4/rGO for energy storage system

  • 期刊论文

  • 发表日期：

    2025年8月19日

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  • Muhammad Fakhar Shehzad,
  • B. M. Alotaibi,
  • Haifa A. Alyousef,
  • Albandari W. Alrowaily,
  • Farhan N. Almufleh,
  • Salma Saddeek,
  • Abhinav Kumar

摘要

Supercapacitors (SCs) have drawn a lot of attention in response to the energy crisis and even environmental harm. The optimal composition and structure of transition bimetallic sulphides make them suitable materials for applications in hybrid supercapacitors. Here, a hydrothermal method was employed to create the bimetallic spinel sulphide ZnCr2S4/rGO. To find out the characterizations of electrode material, a number of techniques have been used, such as galvanostatic charge discharge and electrochemical impedance spectroscopy, along with cyclic voltammetry. The structure of the ZnCr2S4/rGO electrode, which has a large active surface and good conductivity, is responsible for its superior electrochemical performance. The ability of ZnCr2S4/rGO is further improved by the synergistic interaction among the ZnCr2S4 and rGO components. Electrochemical tests indicated that ZnCr2S4/rGO had better specific capacitance (Cs) of 837.9 F/g in comparison with ZnCr2S4, which is 517.3 F/g at 1 A/g. Consequently, ZnCr2S4/rGO (1:1) nanocomposite has a bright future in energy storage applications.