Muniyandi, N. and Kalaiselvi, N. and Periasamy, P. and Thirunakaran, R. and Rameshbabu, B. and Gopukumar, S. and Renganathan, N.G. and Premkumar, T. and Raghavan, M. (2001) Optimization of PVDF-based polymer electrolytes. Journal of Power Sources, 96 (1). pp. 14-19. ISSN 0378-7753

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An attempt was made to synthesise PVdF-based polymer electrolytes containing 1:1 EC:PC plasticiser in various salts such as LiAsF6, LiPF6 and LiBF4 at different rations using PVdF as homopolymer. Though having a high ionic conductivity, certain films were found to be fragile, an indication of poor mechanical strength. Therefore, PVdF-PVC blend polymers were prepared using different rations of PVdF-PVC as well as with differents amount of plasticiser mixture. Film charecterisation was attempted using XRD, DSC, impedance and conductivity measurements. A particular combination of PVdF-PVC in the ratio 25:5 was observed to have high ionic conductivity and good mechanical strength. The electrochemical stability and the stability of lithium-polymer interface of the prepared polymer electrodes were checked in terms of charge-discharge and impedance studies. Effect of storage time and cyclability are discussed.

Item Type: Article
Uncontrolled Keywords: Electrolytes/PVdF-PVC polymer; PVdF polymer; Ionic conductivity
Subjects: Electrochemical Power Sources
Depositing User: ttbdu cecri
Date Deposited: 28 Feb 2012 15:05
Last Modified: 28 Feb 2012 15:05

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