Inorganic sulfide solid-state electrolytes, especially LiPSX (X = Cl, Br, I), are considered viable materials for developing all-solid-state batteries because of their high ionic conductivity and low cost. However, this class of solid-state electrolytes suffers from structural and chemical instability in humid air environments and a lack of compatibility with layered oxide positive electrode active materials. To circumvent these issues, here, we propose LiMAsSI (M=Si, Sn) as sulfide solid electrolytes. When the LiSiAsSI (x = 0.8) is tested in combination with a Li-In negative electrode and TiS-based positive electrode at 30 °C and 30 MPa, the Li-ion lab-scale Swagelok cells demonstrate long cycle life of almost 62500 cycles at 2.44 mA cm, decent power performance (up to 24.45 mA cm) and areal capacity of 9.26 mAh cm at 0.53 mA cm.
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| http://dx.doi.org/10.1038/s41467-023-39686-w | DOI Listing |
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