XRD and SEM Analyses of Bulk Ga-Doped Li7La3Zr2O12 Li- Ion Conducting Solid Electrolyte Prepared via Hot-Pressing Method

Aimee Lorraine M. Blaquera; Christine Mae Macalisang; Jan Carlo Palomares; Renz Marion Garcia; Rinlee Butch M. Cervera

doi:10.4028/www.scientific.net/MSF.998.215

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HomeMaterials Science ForumMaterials Science Forum Vol. 998XRD and SEM Analyses of Bulk Ga-Doped Li7La3Zr2O12...

XRD and SEM Analyses of Bulk Ga-Doped Li₇La₃Zr₂O₁₂Li- Ion Conducting Solid Electrolyte Prepared via Hot-Pressing Method

Abstract:

In this study, bulk lithium-ion conducting solid electrolyte of Ga-doped Li₇La₃Zr₂O₁₂(Li_7-3XGa_xLa₃Zr₂O₁₂) where x = 0.1 (Ga-LLZO) was prepared via hot pressing at 500 °C. Precursor powder for hot-pressing was prepared using conventional solid state reaction method. Planetary ball milling was employed to investigate the particle size effect on the structure and densification of hot-pressed samples. XRD patterns of the bulk hot-pressed sample revealed a crystalline phase of which the major peaks observed can be indexed to a cubic LLZO structure; however, a major impurity phase of La₂Zr₂O₇ was observed for the ball-milled sample. Thermogravimetric and differential thermal analysis showed about 12% weight loss below 900 °C which may have affected the observed hot-pressing structure. Although lower density measurement and an impurity phase of La₂Zr₂O₇ were observed for the ball-milled sample, ball-milling also resulted to a more homogeneous and finer particle size as shown by SEM images results.

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Material Science and Engineering Technology VIII

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Materials Science Forum (Volume 998)

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215-220

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.998.215

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Online since:

June 2020

Authors:

Aimee Lorraine M. Blaquera*, Christine Mae Macalisang, Jan Carlo Palomares, Renz Marion Garcia, Rinlee Butch M. Cervera

Keywords:

All-Solid State Lithium Battery, Ga-Doped LLZO, Hot-Pressing, Solid Electrolyte

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