A high Al-doping ratio halide solid electrolyte with a 3D Li-ion transport framework

The Al substitution ratio can regulate the crystal structure of halide solid electrolytes and reduce Li + migration barriers within the framework. As a result, Li 3 Al 0.7 Y 0.3 Cl 6 exhibits a high ionic conductivity of 1.05 × 10 −4 S cm −1 even at 25 °C.