Liquid-solid combinatorial approach for the synthesis of Li6.25Al0.25La3Zr2O12 and fabrication of high-performance polymer composite electrolytes
Journal
Inorganica Chimica Acta
Journal Volume
602
Start Page
123335
ISSN
00201693
Date Issued
2026-11-01
Author(s)
Abstract
This study developed a new liquid–solid combinatorial approach to preparing Li6.25Al0.25La3Zr2O12 solid-state electrolytes. A pure-phase Li6.25Al0.25La3Zr2O12 sample was obtained through calcination at 800 °C for 2 h. However, Li6.25Al0.25La3Zr2O12 samples could not be synthesized at 800 °C even in 4 h through the solid-state approach. The liquid–solid combinatorial approach improved the mixing and homogenization of the precursors. Consequently, improved formation kinetics and reduced reaction temperature were achieved through the proposed approach. A polymer composite electrolyte prepared using Li6.25Al0.25La3Zr2O12 powder yielded an ionic conductivity of 3.43 × 10−4 S cm−1. The electrolyte was used to fabricate a half-cell battery that exhibited an initial specific capacity of 161 mAh g−1 at 0.1C. Moreover, the Li6.25Al0.25La3Zr2O12 powder obtained through the solid-state process exhibited a specific capacity of 154 mAh g−1. The decline in the electrochemical performance of the Li6.25Al0.25La3Zr2O12 powder can be attributed to the presence of impurity phases. The liquid–solid combinatorial approach reduced the formation temperature of Li6.25Al0.25La3Zr2O12 and improved its electrochemical properties. These results indicated the superiority of the combinatorial approach over the conventional solid-state technique for the preparation of solid-state electrolytes.
Subjects
Electrochemical analysis
LLZO
Polymer composite
Solid-state electrolytes
Publisher
Elsevier B.V.
Type
journal article