Synthesis and characterization of LLZTO solid electrolyte via  the solid-state ball-milling method

A. Tugelbayeva; F. Sultanov; B. Tatykayev; A. Belgibayeva; Z. Shalabayev; E. Nurgaziyeva

doi:10.18321/cpc23(2)163-171

Authors

A. Tugelbayeva National Laboratory Astana, Nazarbayev University, Kabanbay batyr Ave. 53, Astana, Kazakhstan
F. Sultanov National Laboratory Astana, Nazarbayev University, Kabanbay batyr Ave. 53, Astana, Kazakhstan; Institute of batteries, Nazarbayev University, Kabanbay batyr Ave. 53, Astana, Kazakhstan
B. Tatykayev National Laboratory Astana, Nazarbayev University, Kabanbay batyr Ave. 53, Astana, Kazakhstan
A. Belgibayeva National Laboratory Astana, Nazarbayev University, Kabanbay batyr Ave. 53, Astana, Kazakhstan
Z. Shalabayev National Laboratory Astana, Nazarbayev University, Kabanbay batyr Ave. 53, Astana, Kazakhstan
E. Nurgaziyeva National Laboratory Astana, Nazarbayev University, Kabanbay batyr Ave. 53, Astana, Kazakhstan

DOI:

https://doi.org/10.18321/cpc23(2)163-171

Keywords:

solid electrolyte, LLZTO, ionic conductivity, garnet-type, X-ray diffraction, SEM

Abstract

The rapid advancement of electronic devices and energy storage systems demands the development of safe, durable, and high-performance battery components. One of the key challenges in this field is replacing flammable liquid electrolytes with more stable and reliable inorganic solid electrolytes. Among various candidates, garnet-type lithium lanthanum zirconium tantalum oxide Li₆.₄La₃Zr₁.₄Ta₀.₆O₁₂ (LLZTO) has emerged as a promising material due to its excellent chemical stability and high ionic conductivity. In this study, we present the synthesis and characterization of LLZTO solid electrolyte prepared using the solid-state ball-milling method. The as-prepared LLZTO exhibited a well-defined grain structure with particle sizes ranging from 3 to 5 micrometers. Electrochemical analysis revealed an ionic conductivity on the order of 10⁻⁵ S·cm⁻¹ at room temperature, demonstrating its potential for application in solid-state lithium-ion batteries. These findings contribute to the ongoing efforts to develop safer and more efficient energy storage solutions, paving the way for next-generation battery technologies.

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