Ionic conductivities of solid polymer electrolyte/salt systems for lithium secondary battery: Electrostatic potential contribution

Abstract

We establish a thermodynamic model of ionic conductivities model for solid polymer electrolyte/salt systems based on modified double lattice (MDL) model. The proposed model takes into account both the mobility and the charge interactions of the solid polymer electrolyte/salt systems. The interactions between Li ion and polymer molecules are described by electrostatic potential (EP) when Li ion is passing by a polymeric membrane. In comparison with experimental data, quantitative descriptions of the proposed model show better agreement for the given systems than those of existing models.