| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 637547 | Journal of Membrane Science | 2008 | 11 Pages |
Abstract
New hybrid membranes for fuel cell applications based on sulfonated poly(ether ether ketone) (SPEEK) and phosphonated polysilsesquioxanes were synthesized. The impedance spectroscopy measurements show an increase of the proton conductivity for all studied composites, in comparison to plain SPEEK. For hybrid membranes containing 20 wt% of polysilsesquioxane with 80 mol% of phosphonated units the conductivities can reach values that are similar to Nafion 117® at 100% RH. The best results of proton conductivity (142 mS/cm) were obtained for composites with 40 wt% of the same polysilsesquioxane at 120 °C also at 100% RH.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Filtration and Separation
Authors
Sérgio H. Pezzin, Norbert Stock, Sergey Shishatskiy, Suzana P. Nunes,