Abstract:
Initially, the energy storage devices based on liquid electrolytes are widely used to provide the
continuous channel for energy transportation. Some drawbacks are (environmentally harmful and
thermally unstable) that limits their commercial applications. While considering environmental
aspects, the researchers move to find the environmental friendly, and thermally stable solid state
electrolyte based energy storage devices. In this era, the solid state batteries become a center
piece of research as the foremost candidate with great safety concern, high energy densities, cost
effective and environmental friendly.
In solid state batteries, the alkali based garnet type solid state electrolyte materials are thermally
stable, eco-friendly, and have high energy density. In modern world, the consumption of lithium
ion batteries surge day by day. There are limited raw resources for lithium, therefore researcher
move to stir up to find alternative of lithium. Sodium can be considered as the best alternative of
lithium. However, sodium is one of the most abundant element in the earth crust.
In this research, alkali based garnet type solid state electrolyte as Li7La3Zr2O12 and
Na2La3Zr2O12. The main objective of this work is to examine the ionic behavior, homogeneity,
porosity, effect for the slid sate batteries. The x-rays diffraction is used to study the crystal
structure of the material. The phase of the synthesized material is examined by high score expert.
The prepared material is garnet type material with space group Fd-3m. The scanning electron
microscopy is used to analyze the morphology of the synthesized electrolyte materials. The
cyclic voltammetry and AC impedance spectroscopy are used to determine the charging and
discharging rate, and ionic behavior of the materials. The ionic conductivity of both materials has
comparable value for Li7La3Zr2O12 observed at room temperature 2.39×10
-6
Scm
-1
. The optical
band gap of both synthesized materials is analyzed by ultra violet visible spectroscopy. The
Raman spectroscopy technique is used to determine the vibrational energy modes of both
synthesized materials.
