Article ID Journal Published Year Pages File Type
1298521 Solid State Ionics 2009 5 Pages PDF
Abstract

This paper describes the synthesis and characterization of a new solid acid polymer electrolyte (SAPE) based on polyvinyl alcohol, lithium bromide and sulfuric acid. Ethylene carbonate was used as plasticizer in the matrix for membranes prepared by a solution cast technique. AC impedance spectroscopy was used to determine the ionic conductivity of SAPE at different temperature and frequency values giving some insight into its potential utility as a solid acid membrane in solid state batteries. The ionic transference number of mobile ions has been estimated by a dc polarization method and the results reveal that the conducting species are predominately ions. A solid state magnesium battery is fabricated and characterized. A cell with the configuration Mg/SAPE/MnO2 gives a capacity of 270 mAh/g and has an internal resistance ≈ 175 Ω. The electrode degradation after discharge was characterized by XRD analysis.

Related Topics
Physical Sciences and Engineering Chemistry Electrochemistry
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