Borohydride-based Solid-state Electrolytes for Lithium Batteries

Properties of LiBH 4 -LiCl-P 2 S 5 composites are studied regarding their application as solid-state electrolyte for lithium batteries. The studied materials undergo an amorphization at 60°C, accompanied with Li+ conduction increase. The measured ionic conductivity for the optimized borohydride-halide-sulfide system is about ~10−3 S cm−1 at room temperature with low activation energies for ions migration suitable for all-solid-state battery applications near room temperature.