On the ionic conductivity of polymer electrolytes in terms of hole fraction |
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| Authors: | Ugur Yahsi Kemal Ulutas Cumali Tav Deniz Deger |
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| Affiliation: | 1. Physics Department, The Faculty of Arts and Science, Marmara University, 34722 Goztepe, Istanbul, Turkey;2. Physics Department, The Faculty of Science, Istanbul University, 34118 Beyazit, Istanbul, Turkey |
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| Abstract: | 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. © 2008 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 46: 2249–2254, 2008 |
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| Keywords: | free volume hole fraction ionic conductivity modeling PEG polymer electrolytes PPG Simha‐Somcynsky theory statistical thermodynamics voids |
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