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<p>Supercapacitors (SCs) are ideal for high-power applications due to their rapid power delivery. The performance of SCs hinges on innovative electrode materials. This study presents the fabrication of a CuZrO<sub>3</sub> and graphene nanoplatelets (GNP) composite via a microwave-assisted, eco-friendly method. Structural and morphological analyses were conducted using XRD, FT-IR, FT-Raman, UV-DRS, SEM, EDX, HRTEM and N<sub>2</sub> adsorption/desorption. Electrochemical tests on CuZrO<sub>3</sub> and CuZrO<sub>3</sub>@GNP revealed high capacitance (405.5 Fg <sup>−1</sup>), excellent rate performance, and good cyclic stability. An asymmetric supercapacitor using CuZrO<sub>3</sub>@GNP was also fabricated and tested, showing a specific capacitance of 38.01 Fg <sup>−1</sup>, low charge transfer resistance, and robust cyclic performance. Comparative analysis with existing literature highlights the superior performance of this composite material in terms of specific capacitance and stability. This study demonstrates the potential of the CuZrO<sub>3</sub>@GNP nanocomposite for developing advanced SCs electrode materials.</p>

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Microwave-driven eco-friendly fabrication of CuZrO3@GNP for superior asymmetric energy storage devices

  • 期刊论文

  • 发表日期：

    2025年2月25日

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  • J. John Benitto,
  • J. Judith Vijaya,
  • B. Saravanakumar,
  • L. John Kennedy

摘要

Supercapacitors (SCs) are ideal for high-power applications due to their rapid power delivery. The performance of SCs hinges on innovative electrode materials. This study presents the fabrication of a CuZrO3 and graphene nanoplatelets (GNP) composite via a microwave-assisted, eco-friendly method. Structural and morphological analyses were conducted using XRD, FT-IR, FT-Raman, UV-DRS, SEM, EDX, HRTEM and N2 adsorption/desorption. Electrochemical tests on CuZrO3 and CuZrO3@GNP revealed high capacitance (405.5 Fg −1), excellent rate performance, and good cyclic stability. An asymmetric supercapacitor using CuZrO3@GNP was also fabricated and tested, showing a specific capacitance of 38.01 Fg −1, low charge transfer resistance, and robust cyclic performance. Comparative analysis with existing literature highlights the superior performance of this composite material in terms of specific capacitance and stability. This study demonstrates the potential of the CuZrO3@GNP nanocomposite for developing advanced SCs electrode materials.