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Nitroxide‐Substituted Polyether as a New Material for Batteries
Author(s) -
Suga Takeo,
Yoshimura Kentaro,
Nishide Hiroyuki
Publication year - 2006
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200651359
Subject(s) - propylene carbonate , materials science , polymer , electrolyte , ethylene carbonate , polymer chemistry , nitroxide mediated radical polymerization , composite number , glycidyl methacrylate , polymerization , chemical engineering , cathode , ether , electrode , radical polymerization , composite material , chemistry , organic chemistry , engineering
Abstract Nitroxide‐substituted polyether was synthesized as a cathode‐active material for a secondary battery. Anionic ring‐opening polymerization of a TEMPO‐bearing glycidyl ether was carried out under bulk conditions to yield the corresponding polymer with the molecular weight of >10 4 . The obtained polymer was insoluble, but slightly swollen in the electrolyte solution (ethylene carbonate/propylene carbonate). The test cell fabricated with a carbon composite cathode of this radical polymer displayed a plateau voltage at 3.5 V vs. Li/Li + . The cell performance was maintained even with a higher amount of the radical polymer loaded in the composite electrode, which could be ascribed to the flexible and rubbery polyether backbone and its higher compatibility with the electrolyte solution.