Ionic interactions in polymeric electrolytes based on low molecular weight poly(ethylene glycol)s

Article Abstract:

Polymeric electrolytes are ideal materials for electrochemical devices such as batteries, electrochromic displays and fuel cells. Experiments were performed to investigate ionic conduction in PEG-LiClO4 electrolytes. The samples with and without alumina were examined. Fourier transform infrared spectroscopic studies of the ion-polymer and ion-ion interactions were performed. The addition of alpha-alumina resulted in reduced viscosity, decline in the fraction of contact ion pairs and increased the conductivity of the samples in a 0.5-3 mol/kg salt concentration range.

Polymers, Ionic mobility, Glycols, Glycols (Class of compounds)

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Effects of filler surface group on ionic interaction in PEG-LiCIO (sub 4)- Al(sub 2) O(sub 3) composite polyether electrolytes

Article Abstract:

The effect of filler surface group on the conductivity, ion-ion, ion-polymer interactions and microstructure of PEG-LiClO(sub 4)-Al(sub 2)O(sub 3) composite polymer electrolytes is examined. The addition of the filler results in the changes in ionic association as studied by FT-IR and by applying the Fuoss-Kraus formalism to the slat concentration dependence of the molar conductivity of the composite electrolytes studied.

Oxygen, Industrial Gas Manufacturing, All Other Miscellaneous Chemical Product and Preparation Manufacturing, Industrial gases, Chemical preparations, not elsewhere classified, Polyelectrolytes, Lithium Chloride, Electric properties, Aluminum, Chlorides, Benzalkonium chloride, Dichloropropane

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The effects of type of cation and salt concentration on ion-ion and ion-polymer interactions in PEG-MSCN (M= Li, Na, K) polymer electrolytes

Article Abstract:

An examination on the effect of the alkali metal cation and salt concentration on ion-ion and ion-polymer interactions is presented for poly(ethylene glycol) (PEG)-MSCN (M = Li, Na, K) electrolyte by means of impedance spectroscopy, DSC, rheological, and FT-IR techniques. The examination demonstrated that for low salt concentrations of approximately up to 10(super -3) mol/kg PEG and for high than for other systems.

Sodium, Potassium & Sodium Compounds, Sodium & Sodium Compounds, Potassium & Compounds, Potassium compounds, Alkali metal compounds

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