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<p>The development of innovative bifunctional electrode materials having exceptional performance for both hydrogen evolution reaction (HER) and energy storage is in high demand. Covalent triazine frameworks (CTFs) have considerable potential due to their unique characteristics, including intrinsic chemical stability, a heteroatom-rich structure, and customizable porosity. The asymmetric material (CTF/Al<sub>2</sub>O<sub>3</sub>@NCNT) is elaborately designed with Al<sub>2</sub>O<sub>3</sub> nanoparticles as supports and nitrogen-doped carbon nanotubes (NCNT) as continuous pathways for electrons through a controlled hydrothermal approach. This integration configuration improves electrolyte penetration, promotes charge transfer kinetics, and increases the number of active sites. The CTF/Al<sub>2</sub>O<sub>3</sub>@NCNT electrode demonstrates a superior specific capacity (<i>Q</i>s) of 1880 C/g, an energy density (<i>E</i><sub>d</sub>) of 89.4 Wh/kg, and a power density (<i>P</i><sub>d</sub>) of 1730 W/kg, and also maintains stability after long-term cycling. The asymmetrical device also shows high HER catalytic activity with low overpotential and high durability. These results underscore the robust collaborative interaction among CTF, Al<sub>2</sub>O<sub>3</sub>, and NCNT components to promote the asymmetric material as a promising multifunctional platform for hydrogen production and next-generation energy storage technologies.</p>

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Bifunctional Covalent Triazine Framework CTF/Al2O3@N-Doped Carbon Nanotube Nanohybrid for High-Performance Energy Storage and Hydrogen Evolution Reaction

  • 期刊论文

  • 发表日期：

    2026年4月19日

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  • Summaira Khan,
  • Badriah S. Almutairi,
  • Manoj Kumar,
  • M. Waqas Iqbal,
  • Abhinav Kumar,
  • Muhammad Ashraf,
  • Ankit Dilipkumar Oza

摘要

The development of innovative bifunctional electrode materials having exceptional performance for both hydrogen evolution reaction (HER) and energy storage is in high demand. Covalent triazine frameworks (CTFs) have considerable potential due to their unique characteristics, including intrinsic chemical stability, a heteroatom-rich structure, and customizable porosity. The asymmetric material (CTF/Al2O3@NCNT) is elaborately designed with Al2O3 nanoparticles as supports and nitrogen-doped carbon nanotubes (NCNT) as continuous pathways for electrons through a controlled hydrothermal approach. This integration configuration improves electrolyte penetration, promotes charge transfer kinetics, and increases the number of active sites. The CTF/Al2O3@NCNT electrode demonstrates a superior specific capacity (Qs) of 1880 C/g, an energy density (Ed) of 89.4 Wh/kg, and a power density (Pd) of 1730 W/kg, and also maintains stability after long-term cycling. The asymmetrical device also shows high HER catalytic activity with low overpotential and high durability. These results underscore the robust collaborative interaction among CTF, Al2O3, and NCNT components to promote the asymmetric material as a promising multifunctional platform for hydrogen production and next-generation energy storage technologies.