Polymer solid electrolytes. Charge transport mechanisms

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Solvent-free polymer electrolytes have become one of the most active areas of solid-state electrochemistry. The nature of the polymer/salt complex polymer electrolytes is discussed, and several important preparative and characterization schemes are described. The simplest understanding of the ionic mobility is in terms of the immobile solvent concept: ions move in a locally liquid-like solvent provided by the polymer chains, that are themselves immobile due to entanglements. The segmental motions of the polymer host, therefore, facilitate ion motion. This implies a Walden-like proportionality between ion diffusion and microviscosity, as has been observed. Both quasimacroscopic (free-volume) and kinetic (dynamic percolation) models are useful for understanding ion mobility in these materials. Conductivity is harder to understand, because the high salt concentrations give important ion-ion interaction effects, including ion pair formation. Classes, transport mechanisms and applications of polymer electrolytes are briefly described.

Original languageEnglish
Pages (from-to)1-15
Number of pages15
JournalMaterials Forum
Volume15
Issue number1
Publication statusPublished - 1991

Fingerprint

Solid electrolytes
solid electrolytes
Charge transfer
Polymers
Ions
polymers
ions
Electrolytes
electrolytes
salts
ionic mobility
Salts
ion motion
electrochemistry
Free volume
Electrochemistry
solid state
conductivity
kinetics
Kinetics

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Building and Construction
  • Polymers and Plastics
  • Engineering(all)

Cite this

Polymer solid electrolytes. Charge transport mechanisms. / Ratner, Mark A.

In: Materials Forum, Vol. 15, No. 1, 1991, p. 1-15.

Research output: Contribution to journalArticle

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