Conductivities and viscosities of polyethylene glycol (PEG) electrolytes containing divalent metal bromides

Room temperature ionic conductivities and viscosities of polyethylene glycol (PEG, av. mol.wt. 400) electrolytes involving CaBr 2, CoBr 2, ZnBr 2 and CdBr 2 were measured as a function of salt concentration. Conductivities were roughly 10 −5S/cm and decreased in the order CaBr 2 > CoBr 2 > CdB...

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Bibliographic Details
Published in:Solid state ionics 1992-07, Vol.53, p.1059-1063
Main Authors: S. Mendolia, Michael, C. Farrington, Gregory
Format: Article
Language:English
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Summary:Room temperature ionic conductivities and viscosities of polyethylene glycol (PEG, av. mol.wt. 400) electrolytes involving CaBr 2, CoBr 2, ZnBr 2 and CdBr 2 were measured as a function of salt concentration. Conductivities were roughly 10 −5S/cm and decreased in the order CaBr 2 > CoBr 2 > CdBr 2 > nBr 2. Viscosities decreased in the order CaBr 2 > CoBr 2 > ZnBr 2≈CdBr 2. These trends were explained with a model involving cationic crosslinkers and anionic charge carriers. A hypothesized trend in salt dissociation, based on the relative viscosity increase, was found to be consistent with several other studies involving the same divalent cations in various electrolyte systems.
ISSN:0167-2738
1872-7689
DOI:10.1016/0167-2738(92)90290-6