《Low temperature ensures FeS2 cathode a superior cycling stability in Li7P3S11-based all-solid-state lithium batteries》
All-solid-state lithium sulfide batteries have great potential as next-generation energy storage devices due to their low cost and high energy density. However, their development is limited by the poor electrical conductivity of the solid electrolyte and the low electrical conductivity of sulfur. In this paper, a high conductivity Li7P3S11 glass-ceramic solid electrolyte with a room temperature conductivity of 1.27 mS cm-1 was synthesized and combined with an iron disulfide cathode and a Li-In anode to prepare an FeS2/Li7P3S11/Li-In all-solid-state Li-S cell, which maintained 87.9% capacity after 100 cycles at low temperature 0 oC, and the volume of ASSB at 0 oC EIS and in situ pressure characterisation further verified that the difference in electrochemical performance was related to the volume change due to temperature effects. This work provides guidance for the design of all-solid Li-S that can operate over a wide temperature range.
https://doi.org/10.3389/fenrg.2022.1108789
