Using the multiscale approach described above, and inspired by the experimental results of Schaefer et al. discussed in the introduction, we first probed the influence of anion type and nanoparticle volume fraction on conductivity. Our coarse-grained model distinguishes ions only on the basis of their size, neglecting the specific influence of their chemistry. Accordingly, we consider two different anion sizes, σ anion = 2.0 σ and 1.5 σ, where σ denotes the size of the monomer both in the polymer chains and in the oligomeric solvent. The cation size (σ cat ) for this set of results was chosen to be 0.5 σ to represent Li + . To mimic polyethylene oxide and tetraglyme as the functionalized polymer chains and oligomeric solvent host, the strength of the embedded dipole in their respective monomers was fixed to be that of an ethylene oxide (EO) monomer (µ = µ EO ) at 373 K. The simulated cation diffusivities in the multiparticle system and the corresponding ionic conductivities display nonmonotonic dependencies on particle volume fraction (Figure ), consistent with the experimental findings of Schaefer et al. These results also qualitatively agree with the reported observation that employing a larger tethered counterion (-SO 3 BF - 3 ) leads to enhanced conductivity relative to a smaller counterion (-SO - 3 ).