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<p>The growing need for high-performance energy storage systems such as lithium-ion batteries and supercapacitors is driven by the increasing integration of renewable energy technologies. In this context, a Ti-doped WO₃-based supercapacitor with enhanced energy and power density is demonstrated using a modified glassy carbon electrode. The morphology, crystalline structure, and chemical states of WO₃ nanostructures were analysed using high-resolution transmission electron microscopy (HRTEM) and X-ray photoelectron spectroscopy (XPS). Additionally, the electrochemical performance of both pristine and Ti-doped WO₃ nanostructures was evaluated. The Ti-doped WO₃ supercapacitor operated efficiently at 0.8&#xa0;V, delivering a high energy density of 182 Wh kg⁻¹ and a power density of 170&#xa0;W kg⁻¹. Notably, the device retained 83% of its initial capacitance even after 1100 charge–discharge cycles, demonstrating excellent long-term stability.</p>

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Unlocking supercapacitive potential: hydrothermal growth of Ti-Doped WO3 nanoflakes on glassy carbon electrodes

  • 期刊论文

  • 发表日期：

    2025年11月27日

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  • Vandana B. Patil,
  • N.L. Tarwal,
  • B.B. Dhale,
  • I.S. Mulla,
  • S.S. Suryavanshi

摘要

The growing need for high-performance energy storage systems such as lithium-ion batteries and supercapacitors is driven by the increasing integration of renewable energy technologies. In this context, a Ti-doped WO₃-based supercapacitor with enhanced energy and power density is demonstrated using a modified glassy carbon electrode. The morphology, crystalline structure, and chemical states of WO₃ nanostructures were analysed using high-resolution transmission electron microscopy (HRTEM) and X-ray photoelectron spectroscopy (XPS). Additionally, the electrochemical performance of both pristine and Ti-doped WO₃ nanostructures was evaluated. The Ti-doped WO₃ supercapacitor operated efficiently at 0.8 V, delivering a high energy density of 182 Wh kg⁻¹ and a power density of 170 W kg⁻¹. Notably, the device retained 83% of its initial capacitance even after 1100 charge–discharge cycles, demonstrating excellent long-term stability.