Solid Electrolyte Membranes Based on LiO-AlO-GeO-SiO-PO Glasses for All-Solid State Batteries.

Rechargeable Li-metal/Li-ion all-solid-state batteries due to their high safety levels and high energy densities are in great demand for different applications ranging from portable electronic devices to energy storage systems, especially for the production of electric vehicles. The LiAlGe(PO) (LAGP) solid electrolyte remains highly attractive because of its high ionic conductivity at room temperature, and thermal stability and chemical compatibility with electrode materials. The possibility of LAGP production by the glass-ceramic method makes it possible to achieve higher total lithium-ion conductivity and a compact microstructure of the electrolyte membrane compared to the ceramic one.

Phase Composition, Density, and Ionic Conductivity of the LiLaZrO-Based Composites with LiPO Glass Addition.

The glass-ceramic composite electrolytes based on tetragonal LiLaZrO (t-LLZ) and cubic Al-doped LiLaZrO (c-LLZ) with the LiPO glass additive have been prepared. The electrical conductivity and microstructure of the t-LLZ/LiPO and c-LLZ/LiPO composites have been investigated. The phase evolution of electrolytes has been studied using XRD, SEM, and Raman spectroscopy.