Ion conductivity of comb polysiloxane polyelectrolytes containing oligoether and perfluoroether sidechains

J. F. Snyder, Mark A Ratner, D. F. Shriver

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

The ion conductivity has been studied in comb polyelectrolytes consisting of a polysiloxane backbone with oligoether and lithium-sulfonate terminating perfluoroether sidechains. The room-temperature conductivity was found to reach a maximum of 2.5 × 10-6 S/cm at 33 etheric oxygens per lithium ion. The cation mobility is coupled to the polymer segmental motion and is described by the Vogel-Tamman-Fulcher (VTF) equation. The mechanisms behind ion mobility are studied by means of the VTF parameters σ0, B, and T0. In particular, the number of charge carriers as reflected in the parameter σ0 is shown to strongly correlate with the conductivity maxima as a function of lithium ion concentration.

Original languageEnglish
JournalJournal of the Electrochemical Society
Volume150
Issue number8
DOIs
Publication statusPublished - Aug 2003

Fingerprint

Siloxanes
polysiloxanes
Polyelectrolytes
Silicones
lithium
Lithium
Ions
conductivity
ions
ion concentration
sulfonates
stopping
charge carriers
Charge carriers
Cations
cations
Polymers
Positive ions
polymers
room temperature

ASJC Scopus subject areas

  • Electrochemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

Ion conductivity of comb polysiloxane polyelectrolytes containing oligoether and perfluoroether sidechains. / Snyder, J. F.; Ratner, Mark A; Shriver, D. F.

In: Journal of the Electrochemical Society, Vol. 150, No. 8, 08.2003.

Research output: Contribution to journalArticle

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