✦ LIBER ✦

Structural characterization of new poly(ethylene oxide)-based alkaline solid polymer electrolytes

✍ Scribed by E. Salmon; S. Guinot; M. Godet; J.F. Fauvarque

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 134 KB
Volume: 65
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19970718)65:3<601::aid-app20>3.0.co;2-y

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✦ Synopsis

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 03 S/cm.

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