Ionic conductivity studies in poly(methyimethacrylate)-polyethlene oxide hybrid polymer electrolytes with lithium salts

摘要

The transport properties of gel-type ionic conducting membranes consisting of poly(methylmethacrylate) (PMMA), polyethylene oxide (PEO), LiX (X+CIO_4, BF_4, CF_3SO_3) and dimethyl phthalate (DMP) are studied. The polymer films are characterized by FTIR and impedance spectroscopic studies. At room temperature, the highest conductivity, viz., 0.64x10~-4 S cm~-1, is obtained for films of PMMA, PEO, LiBF_4 and DMP. Hybrid polymer electrolytes based on PMMA-PEO appear very promising for lithium battery applications