Conductivity of crosslinked poly(N-vinylpyrrolidone) gel film containing surfactant as electrolyte salt

New polymeric solid electrolyte films, consisting of crosslinked poly(N-vinylpyrrolidone) (PVPD) as matrix, and surfactant, sodium deoxycholate (NaDC), lithium deoxycholate (LiDC), sodium laulylsulfate (R₁₂OSO₃Na), or sodium palmitate (R₁₅COONa) as electrolyte salt, are prepared; their basic structure and conductivity dependence on temperature are reported. The structure of the electrolytes is amorphous. Their conductivity is 3.1 × 10^?5 S cm^?1 (containing NaDC), 8.42 × 10^?6 S cm^?1 (LiDC), 2.18 × 10^?4 S cm^?1 (R₁₂OSO₃Na), and 7.27 × 10^?5 S cm^?1 (R₁₅COONa) at 20°C. Their temperature dependence of the conductivity is similar to that of liquid electrolyte rather than that of usual polymeric solid electrolyte, i.e., the WLF-type dependence. The values of activation energy of conductivity (E_a) were PVPD, 25.5 kJ mol^?1; PVPD/NaDC, 21.4 kJ mol^?1; PVPD/LiDC, 25.3 kJ mol^?1; PVPD/R₁₂OSO₃Na, 17.2 kJ mol^?1; PVPD/R₁₅COONa, 18.7 kJ mol^?1. © 1993 John Wiley & Sons, Inc.