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<p>A series of zinc manganese lithium titanate nanoparticles doped with cerium (Ce) was successfully prepared using the sol-gel technique. The study employed X-ray diffraction (XRD), transmission electron microscopy (TEM), diffuse reflectance, and dielectric spectroscopies to identify nanoparticles and investigate the crystalline structure, dielectric properties, and electrochemical behavior of Zn<sub>3</sub>Mn<sub>0.5</sub>Li<sub>0.2</sub>Ti<sub>4−x</sub>Ce<sub>x</sub>O<sub>12</sub> with different cerium concentrations (x = 0.0, 0.2, 0.6, and 1&#xa0;mol%). The spherical-nanoparticles were produced by the sol-gel technique and calcinated at 700&#xa0;°C for 4&#xa0;h. The optical properties of Z Zn<sub>3</sub>Mn<sub>0.5</sub>Li<sub>0.2</sub>Ti<sub>4</sub>O<sub>12</sub> co-doped with CeO₂ were analyzed using diffuse reflectance spectroscopy. The variation in the absorption edge with different CeO₂ content indicates changes in the material’s band gap and electronic structure. The impact of Ce³⁺ on the dielectric properties was also investigated. The improvement in electrochemical performance is attributed to internal rearrangements within the Zn<sub>3</sub>Mn<sub>0.5</sub>Li<sub>0.2</sub>Ti<sub>4</sub>O<sub>12</sub> nanostructure, driven by the presence of Ce³⁺ ions. The capacitance of Zn<sub>3</sub>Mn<sub>0.5</sub>Li<sub>0.2</sub>Ti<sub>4</sub>O<sub>12</sub> ranges from 41.58 to 38.28&#xa0;F·g⁻¹ with varying the Ce<sup>3+</sup> concentration from 0 to 1&#xa0;mol% at a scan rate of 10 mV·s⁻¹. Additionally, EIS highlights the potential of these nanoceramics for energy storage applications. These findings supply priceless insights into how Ce co-doping affects the suitability of these nanostructures for electronic devices, solar cells, and energy storage implementations.</p>

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Synthesis and characterization of Zn3Mn0.5Li0.2Ti4−xCexO12 nanostructures: spectroscopic and electrochemical insights for enhanced storage performance

  • 期刊论文

  • 发表日期：

    2025年2月5日

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  • Amany M. El Nahrawy,
  • M. K. Seddeek

摘要

A series of zinc manganese lithium titanate nanoparticles doped with cerium (Ce) was successfully prepared using the sol-gel technique. The study employed X-ray diffraction (XRD), transmission electron microscopy (TEM), diffuse reflectance, and dielectric spectroscopies to identify nanoparticles and investigate the crystalline structure, dielectric properties, and electrochemical behavior of Zn3Mn0.5Li0.2Ti4−xCexO12 with different cerium concentrations (x = 0.0, 0.2, 0.6, and 1 mol%). The spherical-nanoparticles were produced by the sol-gel technique and calcinated at 700 °C for 4 h. The optical properties of Z Zn3Mn0.5Li0.2Ti4O12 co-doped with CeO₂ were analyzed using diffuse reflectance spectroscopy. The variation in the absorption edge with different CeO₂ content indicates changes in the material’s band gap and electronic structure. The impact of Ce³⁺ on the dielectric properties was also investigated. The improvement in electrochemical performance is attributed to internal rearrangements within the Zn3Mn0.5Li0.2Ti4O12 nanostructure, driven by the presence of Ce³⁺ ions. The capacitance of Zn3Mn0.5Li0.2Ti4O12 ranges from 41.58 to 38.28 F·g⁻¹ with varying the Ce3+ concentration from 0 to 1 mol% at a scan rate of 10 mV·s⁻¹. Additionally, EIS highlights the potential of these nanoceramics for energy storage applications. These findings supply priceless insights into how Ce co-doping affects the suitability of these nanostructures for electronic devices, solar cells, and energy storage implementations.