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

Casper Frydendal Nørgaard, Ulla Gro Nielsen, Eivind Morten Skou

Research output: Contribution to journalConference articleResearchpeer-review

Abstract

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.

Original languageEnglish
JournalSolid State Ionics
Volume213
Pages (from-to)76-82
Number of pages7
ISSN0167-2738
DOIs
Publication statusPublished - 2012
Event15th International Conference on Solid State Protonic Conductors - Santa Barbara, United States
Duration: 15. Aug 201019. Aug 2010
Conference number: 15

Conference

Conference15th International Conference on Solid State Protonic Conductors
Number15
Country/TerritoryUnited States
CitySanta Barbara
Period15/08/201019/08/2010

Keywords

  • Composite polymer electrolyte
  • Composite membrane
  • Tin dioxide
  • SnO2
  • Ion-exchange

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