Water self-diffusion and ionic conductivity in perfluorinated sulfocationic membranes MF-4SK

被引：0
|
作者：
V. I. Volkov
E. V. Volkov
S. V. Timofeev
E. A. Sanginov
A. A. Pavlov
E. Yu. Safronova
I. A. Stenina
A. B. Yaroslavtsev
机构：
[1] Russian Academy of Sciences,Institute of Chemical Physics
[2] Plastpolimer,Kurnakov Institute of General and Inorganic Chemistry
[3] Russian Academy of Sciences,undefined
来源：
Russian Journal of Inorganic Chemistry | 2010年 / 55卷
关键词：
Ionic Conductivity; Sulfo Group; Cation Hydration; Translational Mobility; Magnetic Field Gradient Pulse;
D O I：
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摘要：
Water self-diffusion and ion mobilities in various ionic forms (H+, Li+, Na+, Rb+, Cs+, and Ba2+) of perfluorinated sulfocationic membranes MF-4SK were studied by NMR and impedance spectroscopy. When degrees of hydration are low, the self-diffusion coefficients of water and ionic conductivities are considerably affected by the water content of the membrane. The self-diffusion coefficients decrease in the order H+ > Ba2+ > Cs+ > Rb+ > Na+ > Li+, whereas the ion mobility decreases in the order H+ > Li+ > Na+ > Cs+ > Ba2+.
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页码：315 / 317
页数：2
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