The Effect of Alumina Filler on the Properties of Imidazolium Ionic Liquid Gel Electrolyte

The influence of the component of the gel polymer electrolyte containing imidazolium ionic liquid on its cathodic stability and mobility of lithium ion has been investigated. The selection of the mixed ionic liquid based on 1-ethyl-3-methyl (EMI) imidazolium and 1-cyanomethyl-3-methyl imidazolium (CmMI) cations exhibits higher cathodic stability for the gel electrolyte than the one containing EMI ionic liquid alone. The addition of alumina filler increases the mobility of lithium ion in the gel, and promotes the reversible lithium deposition-dissolution.