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<p>Researchers have recently shown interest in supercapacitors owing to their amazing P<sub>d</sub> and expanded cycle life. In this study, we used graphitic carbon nitride-adorned aluminum oxide (Al<sub>2</sub>O<sub>3</sub>) nanoparticles to fabricate as electrodes and assessed their performance for supercapacitor application. The composite material was made by using hydrothermal techniques, showing outstanding long-term stability throughout cycling and a noticeable increase in specific capacitance (C<sub>s</sub>). Consequently, the synthesized material has an extreme C<sub>s</sub> of 1214.09&#xa0;F/g, significantly greater than Al<sub>2</sub>O<sub>3</sub> (750.26&#xa0;F/g) at 1&#xa0;A/g and remained stable after 4000th cycle. The generated material demonstrated high energy density (E<sub>d</sub> = 38.48 Wh/kg) and power density (P<sub>d</sub> = 238.87&#xa0;W/kg). Moreover, Al<sub>2</sub>O<sub>3</sub>/g-CN demonstrates symmetrical performance in two-electrode configurations, achieving P<sub>d</sub> of 1100&#xa0;W/kg and C<sub>s</sub> of 234.98&#xa0;F/g at 1&#xa0;A/g. The two electrode studies was also performed to measure the material potential under alkaline medium. The positive results offer strong proof that metal oxide supported on g-CN can be effectively used as a supercapacitor.</p>

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Development of cost-effective Al2O3/g-CN nanocomposites for high performance energy storage devices

  • 期刊论文

  • 发表日期：

    2025年11月8日

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  • Ameer Hamza,
  • B. M. Alotaibi,
  • Nidhal Drissi,
  • Haifa A. Alyousef,
  • Albandari W. Alrowaily,
  • Abhinav Kumar

摘要

Researchers have recently shown interest in supercapacitors owing to their amazing Pd and expanded cycle life. In this study, we used graphitic carbon nitride-adorned aluminum oxide (Al2O3) nanoparticles to fabricate as electrodes and assessed their performance for supercapacitor application. The composite material was made by using hydrothermal techniques, showing outstanding long-term stability throughout cycling and a noticeable increase in specific capacitance (Cs). Consequently, the synthesized material has an extreme Cs of 1214.09 F/g, significantly greater than Al2O3 (750.26 F/g) at 1 A/g and remained stable after 4000th cycle. The generated material demonstrated high energy density (Ed = 38.48 Wh/kg) and power density (Pd = 238.87 W/kg). Moreover, Al2O3/g-CN demonstrates symmetrical performance in two-electrode configurations, achieving Pd of 1100 W/kg and Cs of 234.98 F/g at 1 A/g. The two electrode studies was also performed to measure the material potential under alkaline medium. The positive results offer strong proof that metal oxide supported on g-CN can be effectively used as a supercapacitor.