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

被引：24
|
作者：
Volkov, V. I. [1 ]
Volkov, E. V. [1 ]
Timofeev, S. V.
Sanginov, E. A. [1 ]
Pavlov, A. A. [1 ]
Safronova, E. Yu. [2 ]
Stenina, I. A. [2 ]
Yaroslavtsev, A. B. [2 ]
机构：
[1] Russian Acad Sci, Inst Chem Phys, Chernogolovka 142432, Moscow Oblast, Russia
[2] Russian Acad Sci, NS Kurnakov Gen & Inorgan Chem Inst, Moscow 119991, Russia
来源：
RUSSIAN JOURNAL OF INORGANIC CHEMISTRY | 2010年 / 55卷 / 03期
基金：
俄罗斯基础研究基金会;
关键词：
FIELD GRADIENT NMR; EXCHANGE MATERIALS; SPECTROSCOPY; TRANSPORT; MOBILITY;
D O I：
10.1134/S0036023610030010
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Water self-diffusion and ion mobilities in various ionic forms (H(+), Li(+), Na(+), Rb(+), Cs(+), and Ba(2+)) 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(+) > Ba(2+) > Cs(+) > Rb(+) > Na(+) > Li(+), whereas the ion mobility decreases in the order H(+) > Li(+) > Na(+) > Cs(+) > Ba(2+).
引用
收藏
页码：315 / 317
页数：3
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