Effect of plasticizers on magnesium-poly(ethyleneoxide) polymer electrolyte
Data(s) |
27/12/2000
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Resumo |
Solid polymer electrolytes (SPEs) of poly(ethyleneoxide) and magnesium triflate, which are plasticized with propylene carbonate (PC), ethylene carbonate (EC) and a mixture of PC and EC, are studied for their conductivity, ac impedance of the Mg I SPE interface, cyclic voltammetry, infrared spectroscopy and differential scanning calorimetry. in the presence of plasticizers, the ionic conductivity (a) increases from a value of 1 x 10(-8) S cm(-1) to about 1 x 10(-4) S cm(-1) at ambient temperature. The a is found to follow a VTF relationship with temperature. The values of the activation energy, pre-exponential factor and equilibrium glass transition temperature are shown to depend on the concentration of plasticizer. Ac impedance studies indicate lower interfacial impedance of Mg/plasticized SPE than stainless steel/plasticized SPE. The impedance spectra are analyzed using a non-linear least square curve fitting technique and the interfacial resistance of Mg/plasticized SPE is evaluated. The cyclic voltammetric results suggest a quasireversible type of Mg/Mg2+ couple in plasticized SPE. (C) 2000 Elsevier Science B.V. All rights reserved. |
Formato |
application/pdf |
Identificador |
http://eprints.iisc.ernet.in/31143/1/polymr.pdf Kumar, Girish G and Munichandraiah, N (2000) Effect of plasticizers on magnesium-poly(ethyleneoxide) polymer electrolyte. In: Journal of Electroanalytical Chemistry, 495 (1). pp. 42-50. |
Publicador |
Elsevier science |
Relação |
http://dx.doi.org/10.1016/S0022-0728(00)00404-6 http://eprints.iisc.ernet.in/31143/ |
Palavras-Chave | #Inorganic & Physical Chemistry |
Tipo |
Journal Article PeerReviewed |