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 language | English |
|---|---|
| Pages (from-to) | 1-15 |
| Number of pages | 15 |
| Journal | Materials Forum |
| Volume | 15 |
| Issue number | 1 |
| Publication status | Published - 1991 |
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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 journal › Article
}
TY - JOUR
T1 - Polymer solid electrolytes. Charge transport mechanisms
AU - Ratner, Mark A
PY - 1991
Y1 - 1991
N2 - 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.
AB - 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.
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M3 - Article
VL - 15
SP - 1
EP - 15
JO - Materials Forum
JF - Materials Forum
SN - 0883-2900
IS - 1
ER -