Thermal and complex impedance analysis of amorphous and crystalline lithium salt mixtures

Amorphous electrolytes consisting of the lithium salts, LiR-NSO₂CF₃] were prepared and the attendant low ionic conductivities of the lithium salt mixtures (1×10⁻⁶ S cm⁻¹ at room temperature) are attributed to high glass transition temperatures. An example is the novel amorphous salt, Li18-C-6NSO₂CF₃] which produces an amorphous salt mixture with LiN(SO₂CF₃)₂] (LiTFSI).