Insights into the Compatibility and Interphases of Li6PS5Cl and Ga-Doped Li2ZrCl6 Halide Electrolytes by Solid-State NMR

Li EXSY experiments demonstrate a spontaneous Li-ion exchange between LGZC and LPSCl despite their apparent reactivity. Interestingly, the decomposed products actively participate in this exchange, explaining why these bilayer systems can successfully enhance cell performance. Our study sheds light on the complex interfacial interaction between halides and sulfides, providing insights into the optimal design of solid electrolytes for the next generation of electrochemical devices.