High lithium ionic conductivity of poly(ethylene oxide)s having sulfonate groups on their chain ends

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Abstract
Poly(ethylene oxide) oligomers having sulfonate groups on one or both chain ends [PEO–(SO3M)n(n=1 or 2); M=Li, Na, K, Rb or Cs] with different PEO molecular masses (150–2000) have been prepared as new single-ion conductive matrices. High lithium ionic conductivity (4.45×10-6 S cm-1 , at 30 °C) was obtained in PEO–