Poly ethylene alkaline polymer electrolytes

Varcoe JR, Slade RCT, Yee ELH, Poynton SD, Driscoll DJ, Apperley DC (2007) Poly(ethylene-co-tetrafluoroethylene)-derived radiation-grafted anion-exchange membrane with properties specifically tailored for application in metal-cation-free alkaline polymer electrolyte fuel cells. Chem Mater 19(10) 2686-2693. doi 10.1021/cm062407u... 

A solid-state supercapadtor with alkaline polymer electrolyte was reported for the first time by Lewandowski et al The polymer electrolyte was based on PEO-KOH-H2O. It served as both separator and binder for the electrode material. The selection of PVA was based on the fact that polymers like PVA, PEO and co-poly(epichlorohydrin-ethylene oxide) showed conductivity in the range of 10" S/cm. The separator was made by film casting from an aqueous solution of PEO and KOH in which the concentration of KOH was fixed at 40 wt% in the PEO so that the optimum mechanical strength of the film and conductivity was maintained. To make the electrodes, the PEO/KOH solution was mixed with activated carbon and acetylene black. A capacitance of 90 F/g for the activated carbon was reported and the capadtance values were comparable to that of the KOH electrolyte. The absence of any peak indicated pure electrostatic attraction in the capacitor behavior. When the system was studied at sweep rates higher than 20 mV/s, an appreciable decrease in capacitive behavior was observed due to ohmic drop. From the impedance measurement, the resistance was found to be around 0.77 ohm. The approximately calculated RC time constant was around 1.4 s. 

Fauvarquet JF, Guinot S, Bouzir N, Salmon E, Penneau JF (1995) Alkaline poly(ethylene oxide) solid polymer electrolytes. Application to nickel secondary batteries. Electrochim Acta 40 2449... 

Fauvarque, J.F., Guinot, S., Bouzir, N., Salmon, E., Penneau, J.F. (1995) Alkaline poly (ethylene oxide) solid polymer electrolytes application to nickel secondary batteries. Electrochimica Acta, 40, 2449-2453. 

Salmon, E., Guinot, S., Godet, M., Fauvarque, J.F. (1997) Structural characterization of new poly(ethylene oxide)-based alkaline solid polymer electrolytes. Journal of Applied Polymer Science, 65, 601-607. 

Alkaline composite polymer electrolyte (CPE) based on poly (ethylene oxide) (PEO)-KOH-nanopowders... 

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