Publications
Detailed Information
Performance of gel-type polymer electrolytes according to the affinity between polymer matrix and plasticizing solvent molecules
Cited 78 time in
Web of Science
Cited 78 time in Scopus
- Authors
- Issue Date
- 2001-02-13
- Publisher
- Elsevier
- Citation
- Electrochim. Acta 46 (2001) 1323
- Keywords
- Gel polymer electrolytes ; Ionic conductivity ; Polymer-solvent affinity ; Mechanical strength ; Solvent retention ability
- Abstract
- The solvent retention ability, mechanical strength, and sub-ambient temperature conductivity of polymer gel electrolytes is investigated on the basis of polymer-solvent affinity. Four different polymers, poly(vinylidene fluoride) (PVdF), poly(vinylidene fluoride) (PVdF)-hexafluoropropylene (HFP) copolymer, poly(acrylonitrile) (PAN) and poly(methyl methacrylate) (PMMA) are employed as the gel-forming polymer matrix, while ethylene carbonate (EC)/propylene carbonate (PC) is used as the plasticizing solvent. The solvent retention ability of polymer gels decreases in the order of PMMA≥PANP(VdF-HFP)≥PVdF, which is surely the relative order of polymer affinity for the solvent. The low affinity polymers are advantageous in respect of the mechanical strength of polymer gels, where there appears a microscopic phase separation between the polymer- and solvent-rich phases. For the low temperature conductivity, however, the high affinity polymers are preferred as the freezing of solvent molecules is retarded by virtue of stronger polymer-solvent interactions. When a high affinity polymer is blended with a low affinity one, the features that are intermediate between two extremes are observed.
- ISSN
- 0013-4686
- Language
- English
- Files in This Item:
- There are no files associated with this item.
Item View & Download Count
Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.