Role of Viscosity in Deviations from the Nernst–Einstein Relation
Yunqi Shao, Keisuke Shigenobu, Masayoshi Watanabe, Chao Zhang
Abstract
Deviations from the Nernst-Einstein relation are commonly attributed to ion-ion correlation and ion pairing. Despite the fact that these deviations can be quantified by either experimental measurements or molecular dynamics simulations, there is no rule of thumb to tell the extent of deviations. Here, we show that deviations from the Nernst-Einstein relation are proportional to the inverse viscosity by exploring the finite-size effect on transport properties under periodic boundary conditions. This conclusion is in accord with the established experimental results of ionic liquids.
Topics & Concepts
Nernst equationViscosityEinsteinRelation (database)ThermodynamicsEinstein relationPhysicsMechanicsMaterials scienceClassical mechanicsComputer scienceEconomicsQuantum mechanicsElectrodeMetric (unit)DatabaseOperations managementAdvanced Thermodynamics and Statistical MechanicsMaterial Dynamics and PropertiesPhase Equilibria and Thermodynamics