For low particle loadings (φ < 0.35), the simulation results show that ionic conductivities for the high polarity case (Figure ) are enhanced compared to those for the low polarity case (Figure ). Further, the nanoparticle composition for maximum conductivity in the high polarity case is shifted to much lower particle volume fractions compared to that in the low polarity case. The ionic conductivity is also seen to monotonically increase with cation size for the high polarity case.