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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
Author(s) -
Joo Jae Ho,
Bae Young Chan
Publication year - 2008
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.28870
Subject(s) - debye–hückel equation , van der waals force , thermodynamics , polymer electrolytes , electrolyte , polymer , london dispersion force , chemistry , materials science , chemical physics , physics , molecule , ionic conductivity , organic chemistry , electrode
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