Chloride Solid Electrolytes: Structural Complexity, Ion Transport and Reactivity

Chloride solid electrolytes have spurred significant research interest over the past few years due to their high ionic conductivities and good stability against high voltage cathodes. While their bulk conduction properties depend sensitively on synthesis conditions, these materials often constitute a challenge for characterization due to their ability to accommodate various polymorphic structures, cation disorder, as well as planar defects. In this talk, I will show how solid-state nuclear magnetic resonance (NMR), when combined with X-ray diffraction, computational simulations, and other complementary tools, provides detailed insights into the links between ion transport and the complex structural landscape of this relatively new class of ion conductors, as well as their reactivity against sulfide electrolytes for dual electrolyte solid-state batteries.