Synergistic enhancement of electrical and ionic conductivity in polyvinyl alcohol/polyvinylpyrrolidone‑copper/lithium titanate oxide electrolyte nanocomposite films for Li-ion battery applications

Authors

  • Abdu  Saeed Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia Department of Physics, Thamar University, Thamar 87246, Yemen Author
  • Amal Mohsen  Alghamdi Physics department, Faculty of Science, King Khalid University, Abha 61411, Saudi Arabia Author
  • Maha Aiiad  Alenizi Department of Physics, College of Science-Arar, Northern Border University, P.O. Box 1321, 91431 Arar, Saudi Arabia Author
  • Eman S.  Alzahrani Taif University, Taif, Saudi Arabia Author
  • Randa A.  Althobiti Department of Chemistry, College of Science, University of Bisha, P.O Box 551, Bisha 61922, Saudi Arabia Author
  • Saleh Ahmad  Al-Ghamdi University of Tabuk, Tabuk, Saudi Arabia Author
  • Reem  Alwafi Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia Author
  • G.M. Asnag Emirates International University image/svg+xml Author
  • Ahmed Noman al-Hakimi Qassim University, Al-Mulida, Saudi Arabia Author
  • Aeshah  Department of Physics, Faculty of Science, Taibah University, Yanbu 46423, Saudi Arabia Author
  • El Metwally M.  Abdelrazek Mansoura University, Mansoura, Egypt Author

DOI:

https://doi.org/10.1016/j.est.2024.114534

Keywords:

Polyvinyl alcohol ; Polyvinylpyrrolidone ; Copper nanoparticles ; Lithium titanate oxide nanoparticles ; Nanocomposite electrolyte ; Energy storage

Abstract

Herein, we report the development of polymer nanocomposite electrolyte films tailored for advanced Li-ion battery applications. By incorporating copper/lithium titanate oxide nanoparticles (Cu/Li4Ti5O12 NPs) into a polyvinyl alcohol/polyvinylpyrrolidone (PVA/PVP) blend, we achieved significant enhancements in both ionic and electrical conductivity. The incorporation of Cu boosts the electrical pathways within the polymer matrix, thereby reducing internal resistance and enhancing the overall conductivity. Simultaneously, Li4Ti5O12 acts as an additional source of Li ions, further elevating ionic transport within the electrolyte. Comprehensive analyses via dielectric and impedance spectroscopy confirmed the influence of Cu/Li4Ti5O12 NPs on improving charge storage and transfer capabilities while minimizing electrode polarization across a wide frequency range. These enhancements are attributed to the homogenous distribution of NPs, as validated by scanning electron microscopy (SEM), and the adjusted crystalline characteristics confirmed via X-ray diffraction, leading to increased amorphous regions that support better ion mobility. Fourier-transform infrared spectroscopy (FTIR) also confirms NP-matrix interactions, altering polymer chain dynamics. Besides, thermogravimetric analysis (TGA) indicates increased thermal stability. The results indicate the promising capabilities of these nanocomposite films as efficient solid polymer electrolytes, capable of supporting faster charge-discharge cycles and ensuring enhanced performance and stability in Li-ion batteries.

Author Biographies

  • Abdu  Saeed, Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia Department of Physics, Thamar University, Thamar 87246, Yemen
    Abdu Saeed Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia   Department of Physics, Thamar University, Thamar 87246, Yemen   Corresponding author at: Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia. Abdusaeed@tu.edu.ye Abdusaeed79@hotmail.com
  • G.M. Asnag, Emirates International University
    G.M. Asnag Department of Biomedical Engineering, College of Engineering and Information Technology, Emirates International, University, Sana'a 16881, Yemen   Department of Optometry and Visual Science, College of Medical Sciences, Al-Razi University, Sana'a, Yemen   Correspondence to: G. M. Asnag, Department of Biomedical Engineering, College of Engineering and Information Technology, Emirates International, University, Sana'a 16881, Yemen. g.asnag@yahoo.com
  • Ahmed Noman al-Hakimi, Qassim University, Al-Mulida, Saudi Arabia
    Ahmed Noman al-Hakimi Author information Current affiliation: Qassim University, Al-Mulida, Saudi Arabia Scopus ID: 18133748200

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2025-11-15

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 Saeed, A., Alghamdi, A. M.,  Alenizi, M. A., Alzahrani, E. S., Althobiti, R. A., Al-Ghamdi, S. A., Alwafi, R., Asnag, G., al-Hakimi, A. N.,  Salem, A., & Abdelrazek, E. M. M. (2025). Synergistic enhancement of electrical and ionic conductivity in polyvinyl alcohol/polyvinylpyrrolidone‑copper/lithium titanate oxide electrolyte nanocomposite films for Li-ion battery applications. Emirates International University Digital Repository, 1(1). https://doi.org/10.1016/j.est.2024.114534

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