Polymeric gel electrolytes, based on a blend of poly(Me methacrylate)/poly(vinylidene fluoride) (PMMA/PVdF), ethylene carbonate/propylene carbonate (EC/PC) as plasticizer and lithium perchlorate as electrolyte, were studied as a function of the different polymeric ratios to obtain the best compromise between ionic conduction and mech. properties of the systems involved. Ionic conductivity and the lithium self-diffusion coefficient were measured by the PFG-NMR method, which revealed a maximum of lithium mobility for the composition PMMA 60%-PVdF 40%. The Raman spectroscopic study revealed a change of the interaction between that of the lithium cations and the plasticizer mols. for different PMMA/PVdF ratios. Oscillatory rheol. tests have shown better mech. properties for the intermediate compns. of the blend.
Investigation of ionic conduction and mechanical properties of PMMA-PVdF blend-based polymer electrolytes
NICOTERA, ISABELLA
;COPPOLA, Luigi;OLIVIERO ROSSI, Cesare;M. CASTRIOTA;
2006-01-01
Abstract
Polymeric gel electrolytes, based on a blend of poly(Me methacrylate)/poly(vinylidene fluoride) (PMMA/PVdF), ethylene carbonate/propylene carbonate (EC/PC) as plasticizer and lithium perchlorate as electrolyte, were studied as a function of the different polymeric ratios to obtain the best compromise between ionic conduction and mech. properties of the systems involved. Ionic conductivity and the lithium self-diffusion coefficient were measured by the PFG-NMR method, which revealed a maximum of lithium mobility for the composition PMMA 60%-PVdF 40%. The Raman spectroscopic study revealed a change of the interaction between that of the lithium cations and the plasticizer mols. for different PMMA/PVdF ratios. Oscillatory rheol. tests have shown better mech. properties for the intermediate compns. of the blend.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
