Preparation of Nafion/PTFE/Zr(HPO4)(2) composite membranes by direct impregnation method

作者：Lin Hsiu Li^*; Chang Tsu Jung

来源：Journal of Membrane Science, 2008, 325(2): 880-886.

DOI：10.1016/j.memsci.2008.09.023

• Nafion
• Zirconium hydrogenphosphate
• Solution viscosity
• Poly(tetrafluoroethylene)
• PEMFC

The viscosities of as received 5.1wt.% Nafion solutions (EW = 1100, Du Pont Co) blended with various concentrations of ZrOCl2 were studied. We show the solution viscosity decreases as the wt. ratio of [ZrOCl2]/[Nafion] is increased from 0.0 to 0.03, then the viscosity does not change significantly as the wt. ratio of [ZrOCl2]/[Nafion] is increased from 0.03 to 0.16, and then the viscosity increases dramatically as the wt. ratio of [ZrCCl2]/[Nafion] is increased above 0.16. Four Nafion solutions consisting of 5.1 wt.% Nafion and ZrOCl2 with [ZrOCl2]/[Nafion] wt. ratios of 0.019-0.24 were used with porous poly(tetrafluoroethylene) (PTFE) film to prepare zirconium hydrogenphosphate (ZrP) hybridized Nafion/PTFE (NF-ZrP) composite membranes by direct impregnating porous PTFE in Nafion/ZrOCl2 solutions. The influence of [ZrOCl2]/[Nafion] wt. ratio of Nahon/ZrOCl2 solution on the membrane morphology of NF-ZrP and polyelectrolyte membrane fuel cell (PEMFC) performance at temperatures of 110-130 degrees C with relative humidity of 51.7-28.8% RH was investigated.

• 出版日期2008-12-1