Plasticized and salt-doped single-ion conducting polymer electrolytes for lithium batteries

Abstract

Semi-solid solvent-free electrolytes are created from a single-ion conducting polymer electrolyte, a classic polymer and a plasticizing Li-salt.

Composite Polymer Electrolytes Based on (PEO)4CF3COOLi and Multi-Walled Carbon Nanotube (MWCNT)

“…Figure 8 shows plots of the dc conductivity as a function of the inverse of temperature for different MWCNT concentrations in the (PEO) 4 CF 3 COOLi electrolyte. For all systems, it is observed that the dc conductivity increases with increasing temperature following the Vogel Tamman Fulcher (VTF) equation [ 18 , 32 ]: where σ dc is the conductivity obtained in the plateau, σ 0 is the pre-exponential factor, E A is a parameter known as pseudo-activation energy, k B is the Boltzman constant, T is the absolute temperature, and T 0 stands for the temperature (below the glass transition temperature) at which the free volume, responsible for ionic conduction, disappears, and the ionic conductivity cancels out. Table 6 shows the parameters for the fitting to Equation (2).…”

“…Thermal analyses were performed by differential scanning calorimetry measurements, with a Setaram DSC evo 131 calorimeter, in a temperature range from 176 K to 430 K, at 10 K/min (heating rate used in many studies of polymeric systems [ 17 , 18 ]); above this temperature, no further transitions are observed. Aluminum sample holders of 30 μL and high-purity nitrogen purge gas were used.…”