The XRD pattern for Li3YCl6 shows a crystalline phase indexed to the trigonal structure with the 𝑃3 ̅ 𝑚1 space group, in agreement with previous reports . XRD also confirmed Li6PS5Cl has an argyrodite-type structure (space group 𝐹4 ̅ 3𝑚) and Li1.48Al0.48Ge1.52(PO4)3 crystallizes in the 𝑅3 ̅ 𝑐 space group .