A basic investigation of anhydrous proton conducting gel electrolytes

Proton conducting gel electrolytes based on polymethylmethacrylate doped with sulfuric acid solutions in N,N-dimethylformamide

“…% were not studied as they were unstable and layered in a month after synthesis. It should be emphasized that the conductivity values of gel electrolytes obtained by use are comparable with data in [19,20] though concentrations of proton donor are considerably lower.…”

“…There are some polymeric matrix effects on the gels conductivity. The conductivity growth can be caused by chemical interaction between polymeric matrix and liquid electrolyte just as it was observed in GMA based gel electrolytes doped with phosphoric acid [20,26], however that is not observed in the systems under investigation. Also polymeric matrix can participate in charge transfer process by Grotthuss-type mechanism along with the solvent molecules [21,26].…”

“…The interaction between acid proton and DMF carboxyl group is established fact and is due to hydrogen bond formation [6,20,26,32,33]. One can observe the low frequency shoulder for (C0O) stretching mode of DMF denoting hydrogen bonds formation.…”

“…However, the conductivity of gel electrolytes synthesized using these solutions did not exceed of~10 −4 S·cm −1 . Specific conductivity equal to~10 −3 S·cm −1 was reached for gel electrolytes based on PMMA and doped with solution of oxalic acid (2 M) in the mixture of EC, PC and DMF [19], as well as with phosphoric acid solution (5 M) in PC [20]. Application of strong acids as proton-donors for gel electrolytes preparation is rather limited because of possible polymer destruction and poor chemical stability of electrode-electrolyte interfaces [21,22].…”

Magnetic resonance and conductivity study of a gelatin-based polymer gel electrolyte

“…Wieczorek et al have reviewed the studies on nonaqueous conducting gel electrolytes. They discussed the effect of the solvent on the physical-chemical properties of the gel electrolyte and postulated Grotthus or vehicle-type proton transport mechanisms depending on the acid and the solvent used on the gel electrolyte [10].…”