fig6

Figure 6. (A) Three different polymorphs and (B) corresponding simulated XRD patterns of Li₃PS₄^[69]. Reproduced with permission^[69]. Copyright 2023, American Chemical Society; (C) Fraction of stacking type of anion-sublattice in β- (left) and α-Li₃PS₄ (right)^[121]. Reproduced with permission^[121]. Copyright 2018, American Chemical Society; (D) Three types of rotational motion of PS₄ (left: threefold rotation, middle: librational motion, right: occupancy-change-driven tilting)^[122]. Reproduced with permission^[122]. Copyright 2024, Proceedings of the National Academy of Sciences; (E) (left) Lithium occupancy factor and bottleneck area as a function of x in Li_4-xSi_1-xSb_xS₄ (0 ≤ x ≤ 0.25), and (right) 1D diffusion pathways of lithium-ion diffusion pathways with the corresponding LT-Li₄SiS₄ crystal structure; (F) (left) Arrhenius plots of ionic conductivities and (right) activation energy versus nominal composition for the Li_4-xSi_1-xSb_xS₄ substitution series (0 ≤ x ≤ 0.25)^[41]. Reproduced with permission^[41]. Copyright 2024, American Chemical Society.