Data supporting findings of paper https://doi.org/10.1016/j.ssi.2025.116854
HighlightsA local optimum for lithium mobility in ternary IL/PIL/lithium salt is observed.Lithium diffusion in ternary electrolyte system is analogous to ILE at low to moderate lithium salt concentrations.A change from neutral pair to free lithium ion conductivity is observed at high lithium salt concentrations.
AbstractFor battery architectures that need a solid ion conductor with good contacting performance and high stability against electrochemical oxidation, polymerized ionic liquids (PIL) pose a valuable class of materials. The low conductivity of the binary PIL/ lithium salt system can be increased using a ternary ionic liquid acting as plasticiser. The conductive mechanism of the ternary system is however not fully understood. This work shows the shift in conduction mechanism for the ternary Li−/[1,3]PYR-/PDADMA-FSI system by increasing the lithium salt concentration and comparing the transfer mechanism to binary ionic liquid (IL) electrolyte analogues using pulsed field gradient (PFG) nuclear magnetic