Abstract
The electrochemical stability window of the solid polymer electrolyte 
, 
, at a glassy carbon electrode was determined to be +2.7 to −2.5V vs. Ag. These limits appear to arise from redox of the salt. Linear potential sweep voltammetry was performed on polymer solutions of ferrocene at a macroelectrode and on polymer solutions of 
and 
at a 10 μm Pt microelectrode. Diffusion coefficients for these electroactive solutes in the solid electrolyte are reported. The coefficients and activation barriers for diffusion of dilute solutions of 
in 
and in 
are the same. Plasticization of 
solutions by sorbed acetonitrile vapor enhances the ionic conductivity by ca. 300 times.