fig6

Figure 6. (A) Schematic illustration demonstrating that a LiPF₆ additive in LiTFSI-LiBOB electrolyte prevents the Al corrosion and improves the stability of Li metal. (B) EDS spectra of Li metal anodes after 500 cycles in the dual-salt electrolytes with 0.05 M LiPF₆ additive. Insets in b are the percentages of elements identified in cycled Li metal anodes. (A and B) Reproduced from Ref.^[129] with permission. Copyright 2017, Springer Nature. (C) Chronoamperograms of Al electrodes in LiFSI + BF₄, LiFSI + BOB, LiFSI + DFOB, LiFSI + PF₆, and LiPF₆. The potential was stepped from OCV to 4.8 V (vs. Li/Li⁺) at 45 °C. Reproduced from Ref.^[95] with permission. Copyright 2015, Elsevier. (D) Dilute LiFSI/ACN electrolyte with a considerable amount of free solvent molecules and highly concentrated LiFSI/ACN electrolyte without free solvent molecules. Reproduced from Ref.^[29] with permission. Copyright 2015, Wiley. (E) Mechanism for LiTFSI decomposition and formation of LiF film in 1.0 M LiTFSI and 1.8 M LiTFSI. Reproduced from Ref.^[140] with permission. Copyright 2013, Elsevier.