Nafion 117™-SnO2 composite membranes were prepared by in-situ particle formation using an ion-exchange method. SnO2 was incorporated into Nafion 117ä membranes by ion-exchange in solutions of SnCl2 ∙2 H2O in methanol, followed by oxidation to SnO2 in air. By adjustment of the concentration of SnCl2 ∙ 2 H2O used in the ion-exchange step, compositions ranging from 2 to 8 wt% SnO2 with SnO2 homogeneously distributed as nanoparticles were obtained.
The prepared nanocomposite membranes were characterized by powder XRD, 119Sn MAS NMR spectroscopy, electrochemical impedance spectroscopy, water uptake, tensile stress-strain measurements and thermogravimetric analysis. A SnO2 content around 4 wt% gave a significant increase in membrane stiffness without losses in conductivity.
|Tidsskrift||Solid State Ionics|
|Status||Udgivet - 2012|
|Begivenhed||15th International Conference on Solid State Protonic Conductors - Santa Barbara, USA|
Varighed: 15. aug. 2010 → 19. aug. 2010
Konferencens nummer: 15
|Konference||15th International Conference on Solid State Protonic Conductors|
|Periode||15/08/2010 → 19/08/2010|