Larger cations can move faster in solid polymer electrolytes

Hiroyuki Ohno, Norihisa Kobayashi, Shinji Takeoka, Hajime Ishizaka, Eishun Tsuchida

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

Poly[(ω-carboxy)-oligo(oxyethylene)methacrylate] alkali metal salts (P(CMEnM)s) are synthesized as solid polymer electrolytes which can transfer only cations. The conductivity of a series of alkali metal ions such as Li+, Na+, K+, Rb+, and Cs+ is measured, and the results are summarized with the reduced temperature (T-Tg:Tg=glass transition temperature) to neutralize the effect of segmental motion on the relative conductivity. They show a linear relation between the logarithm of conductivity at T-Tg=60°C and the logarithm of radius of the carrier cations. The ion-dipole interaction is suggested to be the most effective factor to control the mobility in the solid polymer electrolytes. Cations having larger ionic radius such as Rb+ or Cs+ are suggested to have weaker interaction force with ether oxygens, reflecting the faster ion exchange between possible adjacent sites in the polymer matrix.

Original languageEnglish
Pages (from-to)655-658
Number of pages4
JournalSolid State Ionics
Volume40-41
Issue numberPART 2
DOIs
Publication statusPublished - 1990 Aug

    Fingerprint

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Ohno, H., Kobayashi, N., Takeoka, S., Ishizaka, H., & Tsuchida, E. (1990). Larger cations can move faster in solid polymer electrolytes. Solid State Ionics, 40-41(PART 2), 655-658. https://doi.org/10.1016/0167-2738(90)90091-5