Artículos de revistas
NMR and conductivity study of gelatin-based polymer electrolytes
Date
2008Registration in:
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.483, p.120-129, 2008
1542-1406
10.1080/15421400801901365
Author
MATTOS, R. I.
PAWLICKA, A.
TAMBELLI, Carlos Eduardo
DONOSO, José Pedro
Institutions
Abstract
Nuclear Magnetic Resonance spectroscopy (NMR) and complex impedance spectroscopy have been used to study gelatin-based polymer electrolytes plasticized with glycerol and containing lithium perchlorate. The studied samples were prepared with salt concentration of 7.9 wt% and 10.3 wt%. Ionic conductivity of about 10(-5) S/cm was obtained at room temperature for both samples. Lithium (Li-7) and proton (H-1) lineshapes and spin-lattice relaxation times were measured as a function of temperature. The Li-7 NMR relaxation results indicate that the ionic mobility in this system is comparable to those found in other plasticized polymer electrolytes.