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<p>One of the most encouraging options for energy storage applications is transition metal oxides, which can help to deal with the energy crisis and pollution issues. In this work, a novel supercapacitor was built using hydrothermally produced CuAlO<sub>2</sub>/rGO nanocomposite. Herein, a facile hydrothermal technique was used to directly deposit CuAlO<sub>2</sub>/rGO onto nickel foam (NF). Using BET, XRD and SEM, the synthesised nanocomposite was identified and its surface area, shape, and structure were analysed. Using CV and EIS, electrode analysis of fabricated material used as an active material was observed. The CuAlO<sub>2</sub>/rGO shows an increased specific capacitance&#xa0;(C<sub>sp</sub>) of 1689 F/g at 1 A/g, whereas CuAlO<sub>2</sub> exhibits a lower <i>C</i><sub>sp</sub> of 1021 F/g. Additionally, CuAlO<sub>2</sub>/rGO demonstrates remarkable electrode analysis with a power density&#xa0;(P<sub>d</sub>) 233 W/kg, and great cycling stability after the 5000th&#xa0;cycles. CuAlO<sub>2</sub>/rGO nanocomposite’s charge transfer resistance (<i>R</i><sub>ct</sub>) is 0.46 Ω, which is lower than CuAlO<sub>2</sub> (0.56 Ω). All of these results indicate that the CuAlO<sub>2</sub>/rGO nanocomposite could be a viable option for a fast and dependable supercapacitor.</p>

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Investigation of the supercapacitive feature of hydrothermally developed CuAlO2/rGO nanocomposite

  • 期刊论文

  • 发表日期：

    2025年10月30日

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  • F. F. Alharbi,
  • Muhammad Hassnain Abid,
  • Nidhal Drissi,
  • Hala M. Abo-Dief,
  • Abdelaziz Gassoumi,
  • Abhinav Kumar

摘要

One of the most encouraging options for energy storage applications is transition metal oxides, which can help to deal with the energy crisis and pollution issues. In this work, a novel supercapacitor was built using hydrothermally produced CuAlO2/rGO nanocomposite. Herein, a facile hydrothermal technique was used to directly deposit CuAlO2/rGO onto nickel foam (NF). Using BET, XRD and SEM, the synthesised nanocomposite was identified and its surface area, shape, and structure were analysed. Using CV and EIS, electrode analysis of fabricated material used as an active material was observed. The CuAlO2/rGO shows an increased specific capacitance (Csp) of 1689 F/g at 1 A/g, whereas CuAlO2 exhibits a lower Csp of 1021 F/g. Additionally, CuAlO2/rGO demonstrates remarkable electrode analysis with a power density (Pd) 233 W/kg, and great cycling stability after the 5000th cycles. CuAlO2/rGO nanocomposite’s charge transfer resistance (Rct) is 0.46 Ω, which is lower than CuAlO2 (0.56 Ω). All of these results indicate that the CuAlO2/rGO nanocomposite could be a viable option for a fast and dependable supercapacitor.