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Phase behaviors of solid polymer electrolytes/salt system in lithium secondary battery by group-contribution method: Applicability of the extended Debye-Hückel theory
Article first published online: 2 SEP 2008
DOI: 10.1002/app.28870
Copyright © 2008 Wiley Periodicals, Inc.
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How to Cite
Joo, J. H. and Bae, Y. C. (2008), Phase behaviors of solid polymer electrolytes/salt system in lithium secondary battery by group-contribution method: Applicability of the extended Debye-Hückel theory. Journal of Applied Polymer Science, 110: 2884–2890. doi: 10.1002/app.28870
Publication History
- Issue published online: 23 SEP 2008
- Article first published online: 2 SEP 2008
- Manuscript Accepted: 3 JUN 2008
- Manuscript Received: 18 JAN 2008
Funded by
- Ministry of Information and Communication of Korea (“Support Project of University Information Technology Research Center”)
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Keywords:
- melting point depression;
- solid polymer electrolyte;
- group contribution;
- Debye-Hückel theory;
- lithium battery
Abstract
A new group-contribution model based on both the modified double-lattice theory and the Debye-Hückel theory extended by Guggenheim theory is developed to interpret the phase behaviors of solid polymer electrolyte/salt systems at various temperatures and compositions. The model includes a combinatorial energy contribution that is responsible for the revised Flory-Huggins entropy of mixing, the van der Waals energy contribution from dispersion, and the polar force and specific energy contribution from hydrogen bonding. Quantitative description according to the proposed model is in good agreement with the experimentally observed transition temperatures of the given systems. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008