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Structural characterization of new poly(ethylene oxide)‐based alkaline solid polymer electrolytes
Author(s) -
Salmon E.,
Guinot S.,
Godet M.,
Fauvarque J.F.
Publication year - 1997
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/(sici)1097-4628(19970718)65:3<601::aid-app20>3.0.co;2-y
Subject(s) - thermogravimetric analysis , ethylene oxide , differential scanning calorimetry , materials science , electrolyte , oxide , conductivity , potassium hydroxide , chemical engineering , hydroxide , polymer , polymer chemistry , ionic conductivity , chemistry , composite material , copolymer , physics , electrode , metallurgy , engineering , thermodynamics
A new class of alkaline solid polymer electrolytes (SPEs) based on poly(ethylene oxide) (PEO), potassium hydroxide (KOH), and water was investigated. The structure of the SPEs was studied by differential scanning calorimetry, thermogravimetric analysis (TGA), X‐ray diffraction, and optical microscopy techniques. The existence of a crystalline complex between PEO, KOH, and H 2 O was evidenced for some compositions, depending on the O/K ratio. A possible structure was proposed, and a schematic phase diagram was established for this PEO–KOH–H 2 O system. The first conductivity measurements also revealed the great interest of these systems, with conductivity values up to 10 ‐3 S/cm. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 65:601–607, 1997