Abstract
Composite Nafion membranes containing various amounts of TiO2 (3%, 5% and 10%) were prepared by using a recast procedure for application in high temperature Direct Methanol Fuel Cells (DMFCs). The electrochemical behaviour was compared to that of a membrane-electrode assembly (MEA) based on a bare recast Nafion membrane. All the MEAs containing the Nafion-titania membranes were able to operate up to 145°C, whereas the assembly equipped with the bare recast Nafion membrane showed the maximum performance at 120°C. A maximum power density of 340 mW cm-2 was achieved at 145°C with the composite membrane in the presence of oxygen feed, whereas the maximum power density with air feed was about 210 mW cm-2.
Original language | English (US) |
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Pages (from-to) | 345-350 |
Number of pages | 6 |
Journal | Materials Research Society Symposium - Proceedings |
Volume | 756 |
State | Published - 2003 |
Externally published | Yes |
Event | Solid State Ionics 2002 - Boston MA, United States Duration: Dec 2 2002 → Dec 5 2002 |
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- General Materials Science