Sol-Gel Synthesis and Electrical Characterization of Li1+xAlxTi2-x(PO4)3 Solid Electrolytes

  • Mohammed Isah Kimpa Materials Physics Laboratory (MPL), Faculty of Applied Sciences and Technology, Universiti Tun Hussein Onn Malaysia, Pagoh Campus, 84600 Pagoh, Muar, Johor, Malaysia.
  • Mohd Zul Hilmi Mayzan Materials Physics Laboratory (MPL), Faculty of Applied Sciences and Technology, Universiti Tun Hussein Onn Malaysia, Pagoh Campus, 84600 Pagoh, Muar, Johor, Malaysia.
  • Fahmiruddin Esa Materials Physics Laboratory (MPL), Faculty of Applied Sciences and Technology, Universiti Tun Hussein Onn Malaysia, Pagoh Campus, 84600 Pagoh, Muar, Johor, Malaysia.
  • Jibrin Alhaji Yabagi Materials Physics Laboratory (MPL), Faculty of Applied Sciences and Technology, Universiti Tun Hussein Onn Malaysia, Pagoh Campus, 84600 Pagoh, Muar, Johor, Malaysia.
  • Muhammad Muhammad Nmaya Materials Physics Laboratory (MPL), Faculty of Applied Sciences and Technology, Universiti Tun Hussein Onn Malaysia, Pagoh Campus, 84600 Pagoh, Muar, Johor, Malaysia.
  • Mohd Arif Agam Materials Physics Laboratory (MPL), Faculty of Applied Sciences and Technology, Universiti Tun Hussein Onn Malaysia, Pagoh Campus, 84600 Pagoh, Muar, Johor, Malaysia.
Keywords: LATP, sol-gel method, electrolyte, ionic conductivity, NASICON

Abstract

This composition of Lithium Aluminium Titanium Phosphate (LATP) has potential for the fast growing energy storage to be used as solid electrolyte in Li-ion battery. This material is required to solve safety problems of current lithium ion battery. In this study, Li1+xAlxTi2-x(PO4)3 (x = 0.0, 0.1 and 0.2) nanocrystalline composition were synthesized by sol gel method. Lithium Nitrate (LiNO3), Aluminium Nitrate Nonahydrate (Al(NO3)3.9H2O), Titanium (IV) Butoxide (Ti(OC4H9)4) and Ammonium dihydrogen phosphate (NH4H2PO4) were used as starting materials. Citric acid monohydrate was used to control the pH value and ethylene glycol was used as solvent during the preparation. Pure NASICON-type powder with rhombohydral structure (R-3c) space group were obtained after heating the gel precursor at 950 °C for 5 h. The resulting materials were characterized using X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). The Ionic conductivity of the polished samples was carried out using AGILENT 4294A precision impedance analyzer. The XRD analysis revealed pure crystalline phase of LiTi2(PO4)3 NASICON structure with minor impurities (TiO2 and TiP2O7). The highest ionic conductivity value was found approximately 7.936×10-4 S cm-1 for Li1.2Al0.2Ti1.8(PO4)3 sample. It can be summarized that sol-gel method is more promising compared to traditional solid-state method.
Published
2017-12-28
How to Cite
Kimpa, M. I., Mayzan, M. Z. H., Esa, F., Yabagi, J. A., Muhammad Nmaya, M., & Agam, M. A. (2017). Sol-Gel Synthesis and Electrical Characterization of Li1+xAlxTi2-x(PO4)3 Solid Electrolytes. Journal of Science and Technology, 9(3). Retrieved from https://publisher.uthm.edu.my/ojs/index.php/JST/article/view/2151