Stability, Elastic Properties, and the Li Transport Mechanism of the Protonated and Fluorinated Antiperovskite Lithium Conductors.

Lithium-rich antiperovskites (APs) have attracted significant research attention due to their ionic conductivity above 1 mS cm at room temperature. However, recent experimental reports suggest that proton-free lithium-rich APs, such as LiOCl, may not be synthesized using conventional methods. While LiOHCl has a lower conductivity of about 0.