Non-fluorinated non-solvating cosolvent enabling superior performance of lithium metal negative electrode battery.

ABSTRACT: The growth of dendrites on lithium metal electrodes is problematic because it causes irreversible capacity loss and safety hazards. Localised high-concentration electrolytes (LHCEs) can form a mechanically stable solid-electrolyte interphase and prevent uneven growth of lithium metal. However, the optimal physicochemical properties of LHCEs have not been clearly determined which limits the choice to fluorinated non-solvating cosolvents (FNSCs). Also, FNSCs in LHCEs raise environmental concerns, are costly, and may cause low cathodic stability owing to their low lowest unoccupied molecular orbital level, leading to unsatisfactory cycle life. Here, we spectroscopically measured the Li⁺ solvation ability and miscibility of candidate non-fluorinated non-solvating cosolvents (NFNSCs)

SUBMITTER: Moon J 

PROVIDER: S-EPMC9352671 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature