Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7720744 | International Journal of Hydrogen Energy | 2014 | 11 Pages |
Abstract
This work concerns systems utilizing gel electrolytes based on PVdF/HFP, containing a supramolecular compound additive. Supramolecular compounds are one of the many types of additives, and among them - anion receptors. Solutions of 1Â M LiClO4 or 1Â M LiBF4 in solvent: PC, PC/EC mixture (1:1), PC/DEC mixture (1:1) or EC/DEC mixture (1:1), were the liquid electrolyte encapsulated in a polymer membrane. N-[2-[Bis[2-Nâ²-(3-pyridyl)ureido]ethyl]-amino]ethyl]-Nâ²-(3-pyridyl)urea was applied as the supramolecular compound - anion receptor. Content of the receptor varied from 5 to 20Â mmol in 10Â cm3 of 1Â M lithium salt solutions. Changes in ionic conductivity and the stability of gel electrolytes - lithium electrode interface, were analyzed on the basis of impedance spectroscopy technique in Swagelok geometry. Lithium transference number was calculated for some of the studied gels using the polarization method. Finally, thermal stability of the systems studied was determined by means of DSC technique.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
A. Zalewska, A. Bernakiewicz, M. Bystrzycka, M. Marczewski, N. Langwald,