Composite mesoporous titania nafion-based membranes for direct methanol fuel cell operation at high temperature

Vincenzo Baglio*, Alessandra Di Blasi, Antonino S. Aricò, Vincenzo Antonucci, Pier Luigi Antonucci, Chavalit Trakanprapai, Vincenzo Esposito, Silvia Licoccia, Enrico Traversa

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

75 Scopus citations

Abstract

Composite Nafion-based membranes, containing 5 wt % of high-purity mesoporous titania with an average pore size of about 3.5 nm heated to 350, 450, and 600°C as a filler were successfully recasted. Field emission scanning electron microscopy observations showed a high degree of dispersion of mesoporous titania panicles in Nation. Direct methanol fuel cell investigation of such membranes at temperatures higher than 100°C revealed a considerable influence of the presence of the ceramic oxide and of its specific surface area on the electrochemical behavior. The composite membranes allowed operation up to 145°C, showing a significant performance improvement with respect to pure Nafion. At 145°C with oxygen feed, a power density of about 335 mW/cm2 was recorded for the composite Nafion-based membranes, containing 5 wt % of mesoporous titania calcined at 450°C.

Original languageEnglish (US)
JournalJournal of the Electrochemical Society
Volume152
Issue number7
DOIs
StatePublished - Aug 23 2005

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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