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Mathematical modeling of the phase behaviors of solid‐polymer‐electrolyte/salt systems in lithium secondary batteries: The nonrandomness effect
Author(s) -
Pai Sung Jin,
Bae Young Chan,
Kong Sung Ho,
Ryu Si Ok
Publication year - 2004
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.20866
Subject(s) - ethylene oxide , electrolyte , eutectic system , polymer , materials science , oxide , lattice (music) , halide , thermodynamics , inorganic chemistry , chemistry , alloy , physics , composite material , copolymer , metallurgy , electrode , acoustics
Abstract We establish a new melting‐point‐depression theory, based on the modified‐double‐lattice model, that takes into account the local composition concept to describe the phase behaviors of solid‐polymer‐electrolyte/salt systems (modified‐double‐lattice/nonrandom model). In comparison with experimental data, quantitative descriptions of the proposed model show better agreement for the given systems than those of the modified‐double‐lattice model. The systems studied in this work are combinations of poly(ethylene oxide) and zinc halides and of poly(ethylene oxide) and LiCF 3 SO 3 . The results show that the nonrandomness effect of the salt distribution plays a major role in determining the eutectic points of the given systems. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 94: 231–237, 2004