Characterization of pan-based gel electrolytes. Electrochemical stability and lithium cyclability

The electrochemical characteristics of gel electrolytes, formed by the immobilization of propylene carbonate/ethylene carbonate PC/EC solutions containing various LiX lithium salts in poly(acrylonitrile) PAN matrix, have been investigated. Comparisons with parent liquid electrolytes (EC/PC-LiX) have been made. The results based on cyclic voltammetry and lithium plating-stripping tests suggest that the most suitable applicability of this kind of electrolytes is in the so-called rocking chair devices, such as lithium ion batteries and electrochromic windows. 12 refs., 12 figs.