SYNTHESIZE OF GEL POLYMER ELECTROLYTES FOR HIGH CONDUCTIVITY AND GOOD CYCLIC VOLTAMMETRY

Ionic conductivity for gel polymer electrolytes (GPE) are obtained and the polymers are used in zinc-air and tin-air batteries application. The gel polymer consists of methanesulfonic acid (MSA) as additives and polyacrylamide (PAAm) as host polymer. Objective of this work is to synthsize one GPE which gives a high conductivity and good cyclic voltammetry The PAAm-MSA gel electrolytes were prepared with different concentration of MSA. The chemical interaction between PAAm and MSA was studied by FTIR. Impedance spectroscopy technique has been employed to compare the ionic conductivity of these polymer electrolytes. The ionic conductivity of the PAAm (~10-2 S/cm) electrolyte increases by an order of magnitude to ~10-1 S/cm. It was observed that when 3.0 M of MSA is added into the host hydrogel polymer, the ionic conductivity is enhanced from 4.9 × 10-2 S/cm to 7.1 × 10-1 S/cm. The best GPE synthesized in this work is 3.6M PAAm-MSA.