Preparation of Nafion 117™-SnO2 Composite Membranes using an Ion-Exchange Method

Casper Frydendal Nørgaard, Ulla Gro Nielsen, Eivind Morten Skou

Publikation: Bidrag til tidsskriftKonferenceartikelForskningpeer review


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.

TidsskriftSolid State Ionics
Sider (fra-til)76-82
Antal sider7
StatusUdgivet - 2012
Begivenhed15th International Conference on Solid State Protonic Conductors - Santa Barbara, USA
Varighed: 15. aug. 201019. aug. 2010
Konferencens nummer: 15


Konference15th International Conference on Solid State Protonic Conductors
BySanta Barbara

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