The crystallization kinetics of oligomeric polyethers (glymes) and poly(ethylene oxide) (PEO) with a wide range of lithium salts including LiBETI, LiTFSI, LiAsF6, LiPF6, LiClO4, LiI, LiBF4, LiCF3SO3, LiNO3, and LiCF3CO2 have been examined in detail. Wide variations exist between the rates of crystallization of the phases. These variations are strongly dependent upon the lithium salt present and are well correlated with the ionic association behavior of the different lithium salts in aprotic solvents.