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Figure 2. Schematic illustration of (A) ex-situ and (B) in-situ synthesis and the interfacial contact with the different cell elements. Figure 2A and B are reproduced from Ref.^[76] with permission. Copyright 2021 Wiley-VCH. (C) Comparison of Li-S cycling performance between LE and thermal crosslinked QSSE at 0.5 C. Reproduced from Ref.^[60] with permission. Copyright 2016 Elsevier. (D) Galvanostatic cycling of Li || Li symmetric cell of 1 M LiFSI-DOL-based LE (2 mA cm^-2 and 2 mAh cm^-2) and 3.5 M LiFSI-DOL-based QSSE (2 mA cm^-2 and 2 mAh cm^-2, and 5 mA cm^-2 and 5 mAh cm^-2). (E) Cycling performance of 1 M LiFSI-DOL-based LE and 3.5 M LiFSI-DOL-based QSSE at 0.2 C. Figure 2D and E are reproduced from Ref.^[77] with permission. Copyright 2021 Elsevier. (F) Schematic illustration of Li nucleation and PS diffusion in S@C/LE/Li and S@C/UPHC-QSSE/Li. Reproduced from Ref.^[79] with permission. Copyright 2020 Elsevier.