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<p>Nickel Aluminum layered double hydroxide (NiAl LDH) nanoflakes anchored on graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>), suggesting its potential as an electrode material for supercapacitor applications. This NiAl LDH/g-C<sub>3</sub>N<sub>4</sub> composite is developed through a one-step hydrothermal method, and its properties were confirmed by physicochemical analysis. In a three-electrode system for electrochemical analysis, the nanocomposite exhibits a specific capacitance of 812 F g<sup>−1</sup> at a current density of 1 A g<sup>−1</sup>. The results show that varying the quantity of g-C<sub>3</sub>N<sub>4</sub> in layered double hydroxide (LDHs) enhances their electrochemical characteristics by assembling the LDH hosts with the g-C<sub>3</sub>N<sub>4</sub> it improves the electronic conductivity. Moreover, to assess the full cell energy storage capabilities we designed (NiAl LDH/g-C<sub>3</sub>N<sub>4</sub>//AC) asymmetric supercapacitor. The supercapacitor device exhibited an energy density of 33.43 Wh kg<sup>−1</sup> and power density of 7498.64 W kg<sup>−1</sup> along with 83% of stability retention after 5000 cycles. The findings indicate that the developed electrode has a potential application in energy storage systems.</p>

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Investigation on the electrochemical performance of NiAl LDH@g-C3N4 as an optimized electrode for asymmetric supercapacitor application

  • 期刊论文

  • 发表日期：

    2025年12月24日

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  • A. Vinnarasi,
  • A. Gowdhaman,
  • S. Arun Kumar,
  • R. Ramesh,
  • J. Kalyana Sundar,
  • P. M. Anbarasan

摘要

Nickel Aluminum layered double hydroxide (NiAl LDH) nanoflakes anchored on graphitic carbon nitride (g-C3N4), suggesting its potential as an electrode material for supercapacitor applications. This NiAl LDH/g-C3N4 composite is developed through a one-step hydrothermal method, and its properties were confirmed by physicochemical analysis. In a three-electrode system for electrochemical analysis, the nanocomposite exhibits a specific capacitance of 812 F g−1 at a current density of 1 A g−1. The results show that varying the quantity of g-C3N4 in layered double hydroxide (LDHs) enhances their electrochemical characteristics by assembling the LDH hosts with the g-C3N4 it improves the electronic conductivity. Moreover, to assess the full cell energy storage capabilities we designed (NiAl LDH/g-C3N4//AC) asymmetric supercapacitor. The supercapacitor device exhibited an energy density of 33.43 Wh kg−1 and power density of 7498.64 W kg−1 along with 83% of stability retention after 5000 cycles. The findings indicate that the developed electrode has a potential application in energy storage systems.