New superionic halide solid electrolytes enabled by aliovalent substitution in Li 3− x Y 1− x Hf x Cl 6 for all-solid-state lithium metal based batteries

Novel mixed-metal Li 3− x Y 1− x Hf x Cl 6 has been subtly designed by doping engineering to achieve superionic halide conductors for all-solid-state lithium-metal based batteries.