One – Step synthesis of glass ceramic Li6PS5Cl1-xIx solid electrolytes for all-solid-state batteries

Different variations of glass-ceramic Li 6 PS 5 Cl 1-x I x (x = 0, 0.1, 0.2, 0.4, 0.5, 0.6, 0.8, 1) were synthesized using single-step ball milling without the need of an additional heating step. By using smaller diameter balls compared to conventional synthesis methods, we ensure smaller particle sizes, improving the contact between the particles due to larger surface area effects. Ionic conductivities up to 1.1 mS/cm were achieved with an activation energy of 0.19 eV. The galvanostatic cycling stability were tested by using the prepared samples as a separator in an all-solid-state battery with an NMC811 mixed commercially available Li 6 PS 5 Cl cathode and an In-Li anode.