For the ion transport model considered here, we previously reported 42 that the average nearest particle distance and percolation of the nanoparticles are significant aspects influenc-ing diffusivity. Briefly, the former dictates the "connectivity" between adjacent nanoparticles and correspondingly the mobility of cations while hopping from the surface of a nanoparticle to that of its neighbor. In the model, there exists an ideal range for the distance between adjacent particles to facilitate cation transport; separations too large disrupt "contact" between neighboring nanoparticle surface regions and separations too close result in interdigitation of nanoparticle surface functional groups that reduces cation mobility. Percolation, which characterizes the spatial extent of particle connectivity and thereby the corresponding surface transport pathways, correlates positively with cation diffusivity.