<p>The development of high-performance supercapacitor electrodes remains a significant challenge due to limitations in energy density, rate capability, and cycling stability. In this study, we introduce a novel ZIF-67/CuO–g-C<sub>3</sub>N<sub>4</sub>–RGO/MXene nanocomposite, integrating the high porosity of metal-organic frameworks, redox activity of transition metal oxides, and superior conductivity of 2D materials. Incorporating a CuO–g-C<sub>3</sub>N<sub>4</sub>–RGO ternary hybrid into a ZIF-67/MXene matrix results in a hierarchical porous architecture with enhanced ion transport and increased electroactive surface area. The optimized electrode exhibits a high specific capacitance (1250&#xa0;F g<sup>−1</sup>), energy density (111.11 Wh kg<sup>−1</sup>), power density (411.51&#xa0;W kg<sup>−1</sup>), and excellent cycling stability (95.2% retention after 10,000 cycles), while the asymmetric supercapacitor demonstrates promising electrochemical performance, highlighting the novelty of this nanocomposite for advanced energy storage applications.</p>

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Multicomponent Nanocomposite Based on MXene and MOFs with CuO-C3N4-RGO: An Approach in Green Energy Supercapacitor Application

  • Rozhin Darabi,
  • Mehdi Shabani-Nooshabadi

摘要

The development of high-performance supercapacitor electrodes remains a significant challenge due to limitations in energy density, rate capability, and cycling stability. In this study, we introduce a novel ZIF-67/CuO–g-C3N4–RGO/MXene nanocomposite, integrating the high porosity of metal-organic frameworks, redox activity of transition metal oxides, and superior conductivity of 2D materials. Incorporating a CuO–g-C3N4–RGO ternary hybrid into a ZIF-67/MXene matrix results in a hierarchical porous architecture with enhanced ion transport and increased electroactive surface area. The optimized electrode exhibits a high specific capacitance (1250 F g−1), energy density (111.11 Wh kg−1), power density (411.51 W kg−1), and excellent cycling stability (95.2% retention after 10,000 cycles), while the asymmetric supercapacitor demonstrates promising electrochemical performance, highlighting the novelty of this nanocomposite for advanced energy storage applications.