fig1

Figure 1. (A) Optical photographs of 0.5M-D (right) and 1M-D (left) electrolytes at different temperatures. (B) The fitted Raman spectra of 0.5M-D and 1M-D at 25 °C. (A and B) Figures reprinted with permission from Ref.^[63]. Copyright 2024 Wiley-VCH. (C) In situ monitoring of an AG||PTPAn full cell at -40 °C using a three-electrode setup. Reprinted with permission from Ref.^[64]. Copyright 2021 Wiley-VCH. (D) Proposed NaFSI-derived film-formation mechanism in the NNFM111||HC full cell. (E) Rate performance of NNFM111||HC full cells with different electrolytes at -20 °C. (D and E) Figures reprinted with permission from Ref.^[69]. Copyright 2024 Wiley-VCH.