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<p>Ternary nanocomposites adjust the required charge storage qualities, such as electrical conductivity, redox states and surface area, by mutually combining the material features of three different materials. Therefore, here we reported an ex situ strategy to synthesis a ternary nanocomposite of graphene-titanium dioxide-manganese oxide (G-TiO<sub>2</sub>-α-MnO<sub>2</sub>) in order to improve the supercapacitive properties of graphene/TiO<sub>2</sub>/α-MnO<sub>2</sub> nanocomposites. FTIR, Raman, XRD and SEM-EDXS spectroscopy, among other material characterization methods, were used to characterize the produced ternary nanocomposite. The different materials’ distinctive peaks were shown to be crystalline by XRD tests, while TiO<sub>2</sub>-α-MnO<sub>2</sub> deposition on 3DG was disclosed by FESEM experiments. In order to examine the electrochemical properties, the specific capacitance was measured in a 3&#xa0;M KOH solution using cyclic voltammetry (CV) and galvanostatic charge–discharge techniques. These CV studies indicate that the G/TiO<sub>2</sub>/α-MnO<sub>2</sub> nanocomposites have shown exceptional performance. The sample with the highest specific capacitance, 530.37 F/g at 15&#xa0;mV/s, had 3% weight of G/TiO<sub>2</sub>/α-MnO<sub>2</sub>. Additionally, after 2000 cycles, the device demonstrated better cycling stability, indicating its potential for use as a commercial electrode for asymmetric supercapacitors (ASCs).</p>

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Supercapacitors performance of graphene-TiO2-α-MnO2 ternary nanocomposite electrodes prepared via ex situ synthesis

  • 期刊论文

  • 发表日期：

    2025年6月11日

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  • Kapil Jagtap,
  • Rajesh Barde,
  • Kailash Nemade,
  • Sandeep Waghuley

摘要

Ternary nanocomposites adjust the required charge storage qualities, such as electrical conductivity, redox states and surface area, by mutually combining the material features of three different materials. Therefore, here we reported an ex situ strategy to synthesis a ternary nanocomposite of graphene-titanium dioxide-manganese oxide (G-TiO2-α-MnO2) in order to improve the supercapacitive properties of graphene/TiO2/α-MnO2 nanocomposites. FTIR, Raman, XRD and SEM-EDXS spectroscopy, among other material characterization methods, were used to characterize the produced ternary nanocomposite. The different materials’ distinctive peaks were shown to be crystalline by XRD tests, while TiO2-α-MnO2 deposition on 3DG was disclosed by FESEM experiments. In order to examine the electrochemical properties, the specific capacitance was measured in a 3 M KOH solution using cyclic voltammetry (CV) and galvanostatic charge–discharge techniques. These CV studies indicate that the G/TiO2/α-MnO2 nanocomposites have shown exceptional performance. The sample with the highest specific capacitance, 530.37 F/g at 15 mV/s, had 3% weight of G/TiO2/α-MnO2. Additionally, after 2000 cycles, the device demonstrated better cycling stability, indicating its potential for use as a commercial electrode for asymmetric supercapacitors (ASCs).