On the Ionic Conductivity of Polymer Electrolytes in Terms of Hole Fraction

被引：18
作者：
Yahsi, Ugur [1 ]
Ulutas, Kemal [2 ]
Tav, Cumali [1 ]
Deger, Deniz [2 ]
机构：
[1] Marmara Univ, Fac Arts & Sci, Dept Phys, TR-34722 Istanbul, Turkey
[2] Istanbul Univ, Fac Sci, Dept Phys, TR-34118 Istanbul, Turkey
来源：
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS | 2008年 / 46卷 / 20期
关键词：
free volume; hole fraction; ionic conductivity; modeling; PEG; polymer electrolytes; PPG; Simha-Somcynsky theory; statistical thermodynamics; voids;
D O I：
10.1002/polb.21556
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A theoretical model to interpret the conductivity of ions through polymer electrolytes is established in terms of the temperature and pressure-dependent hole fraction computed from Simha-Somcynsky hole theory. The model successfully linearizes the logarithm of PPG and PEG conductivity data with NaCF3SO3 in a 20:1 ratio for a broad range of temperature and pressure. The conductivity parameter and transmission coefficient with an additive hole fraction constant are discussed and compared for both species. The derivative of the logarithm of conductivity with respect to the hole fraction decreases inversely with the hole fraction and saturates at about 0.08 and 0.12 hole fractions for PPG and PEG, respectively. (C) 2008 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 46: 2249-2254, 2008
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页码：2249 / 2254
页数：6
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