Influence of different anions of lithium salts on GPE membrane

Abstract

Polymer membrane composed of PVdC-AN/PMMA/EC with different anions of lithium salts were prepared using solution casting technique. A substantial change in ionic conductivity is observed in the vibrational and electrochemical analysis spectra, which may be due to the combined effect of ionic mobility, cation radii and dissociation constant. The conductance spectra and complex dielectric analysis shows that the sample containing LiAsF6 salt shows better performance. There is stronger interaction between oxygen atoms in the ether and carbonyl groups and lithium ions, than that with nitrogen atoms, which can found from infrared spectroscopic analysis.Polymer membrane composed of PVdC-AN/PMMA/EC with different anions of lithium salts were prepared using solution casting technique. A substantial change in ionic conductivity is observed in the vibrational and electrochemical analysis spectra, which may be due to the combined effect of ionic mobility, cation radii and dissociation constant. The conductance spectra and complex dielectric analysis shows that the sample containing LiAsF6 salt shows better performance. There is stronger interaction between oxygen atoms in the ether and carbonyl groups and lithium ions, than that with nitrogen atoms, which can found from infrared spectroscopic analysis.