Nanocomposite single ion conductor based on organic–inorganic hybrid

New nanosized silica with the propane lithium sulfonate was systematically synthesized as the lithium ions source of the single ion conductor. The cross-linked single ion conductor based on the PEGDMA, the modified silica, and the plasticizer (PC/DMSO, 50/50 w/w) was prepared by UV-curing. Ionic conductivity and interfacial stability toward the lithium electrode of the cross-linked nanocomposite single ion conductor were investigated by varying the modified silica content. The ionic conductivity of the cross-linked single ion conductor showed maximum trend with the modified silica content. The ionic conductivity of the cross-linked single ion conductor with 30% modified silica was 2.2×10−4 S/cm at 25 °C. Interfacial stability between the cross-linked nanocomposite single ion conductor and the lithium electrode was enhanced by introducing the modified silica.