Ionically conducting polymers: Principles and properties of solid electrolytes
The recent success in developing rechargeable lithium batteries incorporating polyether-based electrolytes has led to the anticipation of a wider use of polymer electrolytes in a host of different applications. The polymers with the best combinations of solvation power, conductivity and electrochemical stability are all based on either PEO or polymers incorporating a high density of EO units. PEO-based electrolytes still yield the highest conductivities at elevated temperatures (approx.100/sup 0/C) when it is completely amorphous. What has emerged during the last ten years of research on polymer electrolytes is the central importance of the amorphous state for high conductivity, where the ion mobility is governed by the mobility associated with a low glass transition temperature. The difference between polymer and liquid electrolytes is that in the former the solvating part does not migrate with the ions. There is, however, still some controversy concerning the nature of the ionic species, i.e. whether the salt is present in the form of associated ions. The intensive research of the last few years has led to a far better understanding of these polymer-ion complexes. Several different types of solvating polymers have been developed, in particular single ion conductors, which represent much of the future of ion conducting polymer research. 36 refs.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA); Polytechnic Univ., Brooklyn, NY (USA). Dept. of Chemistry
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 5983956
- Report Number(s):
- BNL-40320; CONF-8710178-1; ON: DE88001552
- Resource Relation:
- Conference: Short course on electroactive polymers, New Paltz, NY, USA, 28 Oct 1987; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
ELECTRIC BATTERIES
SOLID ELECTROLYTES
POLYETHYLENE GLYCOLS
IONIC CONDUCTIVITY
REVIEWS
POLYMERS
PHASE DIAGRAMS
USES
ALCOHOLS
DIAGRAMS
DOCUMENT TYPES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROCHEMICAL CELLS
ELECTROLYTES
GLYCOLS
HYDROXY COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PHYSICAL PROPERTIES
250903* - Energy Storage- Batteries- Materials
Components
& Auxiliaries
360603 - Materials- Properties