Scholarlink

<p>Clay (c- Ti<sub>3</sub>C<sub>2</sub>), delaminated (d- Ti<sub>3</sub>C<sub>2</sub>), and silicon nanoparticle-incorporated (c- Ti<sub>3</sub>C<sub>2</sub>/Si and d- Ti<sub>3</sub>C<sub>2</sub>/Si) MXenes were synthesized, characterized, and electrochemically tested for potential energy storage uses. X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and Raman spectroscopy were used to characterize the materials. The successful synthesis was confirmed by XRD analysis, which showed that delamination and silicon addition caused noticeable structural changes. The clay, delaminated, and silicon-incorporated MXenes were compared in terms of morphology and composition using SEM/EDX spectra, demonstrating increased surface area and altered elemental distribution due to delamination and Si doping. Raman spectroscopy provided additional insights into vibrational modes and structural changes resulting from these treatments. Electrical performance was evaluated using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and galvanic charge-discharge (GCD). The d-Ti₃C₂/Si nanocomposite showed the highest specific capacitance of 374.5&#xa0;F g⁻¹ at 1&#xa0;A g⁻¹, outperforming pristine c-Ti₃C₂ thanks to improved ion diffusion and electrolyte access. Its larger surface area and better ion transport pathways made d-Ti₃C₂ superior in specific capacitance and rate capability compared to c-Ti₃C₂. Additionally, the d-Ti₃C₂/Si electrode reached an energy density of 18.03 Wh kg⁻¹ at a power density of 3.61&#xa0;W kg⁻¹, confirming its enhanced energy storage performance compared to pristine c-Ti₃C₂. The silicon incorporation significantly affected the electrochemical behavior, as the c-Ti₃C₂/Si and d-Ti₃C₂/Si electrodes displayed distinct charge storage mechanisms.</p> Graphical abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

A structural and compositional analysis of the customization of Ti3C2 MXenes for enhanced power storage

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年2月8日

查看全文
  • Walaa A. Hussein,
  • P. Ragupathy,
  • Raghupandiyan Naresh,
  • V. Varshini,
  • Ghalia A. Gaber

摘要

Clay (c- Ti3C2), delaminated (d- Ti3C2), and silicon nanoparticle-incorporated (c- Ti3C2/Si and d- Ti3C2/Si) MXenes were synthesized, characterized, and electrochemically tested for potential energy storage uses. X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and Raman spectroscopy were used to characterize the materials. The successful synthesis was confirmed by XRD analysis, which showed that delamination and silicon addition caused noticeable structural changes. The clay, delaminated, and silicon-incorporated MXenes were compared in terms of morphology and composition using SEM/EDX spectra, demonstrating increased surface area and altered elemental distribution due to delamination and Si doping. Raman spectroscopy provided additional insights into vibrational modes and structural changes resulting from these treatments. Electrical performance was evaluated using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and galvanic charge-discharge (GCD). The d-Ti₃C₂/Si nanocomposite showed the highest specific capacitance of 374.5 F g⁻¹ at 1 A g⁻¹, outperforming pristine c-Ti₃C₂ thanks to improved ion diffusion and electrolyte access. Its larger surface area and better ion transport pathways made d-Ti₃C₂ superior in specific capacitance and rate capability compared to c-Ti₃C₂. Additionally, the d-Ti₃C₂/Si electrode reached an energy density of 18.03 Wh kg⁻¹ at a power density of 3.61 W kg⁻¹, confirming its enhanced energy storage performance compared to pristine c-Ti₃C₂. The silicon incorporation significantly affected the electrochemical behavior, as the c-Ti₃C₂/Si and d-Ti₃C₂/Si electrodes displayed distinct charge storage mechanisms.

Graphical abstract