Transference Number Measurements on Gel Polymer Electrolytes for Lithium-Ion Batteries

摘要

Gel polymer electrolytes for Lithium-Ion batteries based on MMA and LiPF_6 in EC:DMC (1:1 wt.) with different salt concentration were prepared by radical photo polymerization. These samples were measured on transference number using Bruce-Vincent method based on combination of DC polarization and AC Electrochemical Impedance Spectroscopy (EIS) techniques. This method gave values ranging from 0.24 at 0.05 mol l~(-1) LiPF_6 to 0.69 at 1 mol l~(-1) LiPF_6 salt concentration.