DC POLARIZATION OF POLYMER ELECTROLYTES

P G BRUCE, M T HARDGRAVE, C A VINCENT

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29 Citations (Scopus)

Abstract

The steady-state current flowing in a polymer electrolyte when a constant potential is applied to a symmetric cell of the type M(s)\M+X-(polymer)\M(s) has been determined as a function of both the magnitude of the dc potential and the salt concentration in amorphous PEO:LiCF3SO3 and PEO:LiClO4 systems. Such measurements may be used to determine a practical electrolyte parameter, the current fraction, which is defined as the ratio of the current flowing when the cell is passing a steady state current following establishment of a stable concentration gradient, to the current flowing in the absence of a concentration gradient. In addition, the range of linear steady state current-applied potential difference response has been evaluated, which can, under certain circumstances, be interpreted in terms of the extent of ion association in the polymer electrolyte.

Original languageEnglish
Pages (from-to)1517-1520
Number of pages4
JournalElectrochimica Acta
Volume37
Issue number9
Publication statusPublished - Jul 1992

Keywords

  • POLYMER ELECTROLYTE
  • ION ASSOCIATION
  • TRANSFERENCE NUMBER
  • DC POLARIZATION
  • STATE CURRENT FLOW
  • CELLS

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