Microstructural, Impedance and Conductivity Studies of Magnesium Doped Lithium Titanate Materials for Li-ion Batteries

In this research, we present the results on the effect of the partial doping of divalent Mg2 + in the place of monovalent Li + in LTO (lithium titanate, Li4Ti5O12) material. For the mother compound as well as Mg doped with the formula Li4-xMgxTi5O12 (x = 0 and 0.05), the partial influence of magnesium on structural, impedance and conductivity properties have been investigated. A systematic presentation of the results of the structural and electrical properties of the anode materials are studied through TG/DTG, XRD, FESEM with EDS and LCR. The observed diffraction peaks are in full agreement with the ordered LTO spinel structure belonging to the Fd-3 m space group. The doped material is quite large with grain size upto above 1.1 lm in diameter and also has a wide distribution range. The impedance properties of the Li4-xMgxTi5O12 (X = 0, 0.05) anode materials are studied in the temperature ranging from room temperature to 120 degrees C and frequency ranging from 20 Hz to 1 MHz by employing complex impedance spectroscopy (CIS). The conductivity studies reveal that the Mg doped material Li3.95 Mg0.05Ti5O12 exhibits highest electrical conductivity of 3.03 x 10(-5) S/cm. (C) 2020 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the International Conference on Advanced Materials Behavior and Characterization.