Electrical conductivity of Al-doped Li2ZrO3 ceramics for Li-ion conductor electrolytes

All-solid-state Li-ion batteries (LIBs) have recently attracted widespread attention for their high energy density and safety. Some research have conducted on the Li2ZrO3-based Li-ion conductor electrolytes, while there is little work on the conductivity below 100 degrees C, although it is very important for LIBs work around room temperature. Here, monoclinic Li2ZrO3-based ceramics are prepared via a wet chemistry method, and the conductivities of Li2ZrO3 ceramics are tuned by defect engineering of Al3+ ions introduction. The conductivity of Al-doped Li2ZrO3 reaches up to 3.06 x 10(-4) S cm(-1) at 25 degrees C, the related activation energy of conduction is less than 0.1 eV. Simulation calculation using bond valence site energy reveals that there is a two-dimensional Li-ion migration network in the crystal structure of Li2ZrO3.

Automated summary

This study focuses on tuning the conductivity of Li2ZrO3 ceramics by introducing Al3+ ions, achieving high conductivity performance under room temperature conditions. The research reveals the presence of a two-dimensional lithium ion migration network in the crystal structure of Li2ZrO3.