Abstract
Protonic ceramic membrane fuel cells (PCMFCs) based on oxide proton conductors exhibit more advantages than traditional solid oxide fuel cells (SOFCs) based on oxygen-ion conducting electrolytes, such as low activation energy and high energy efficiency. In order to develop a simple and cost-effective route to fabricate PCMFCs with SrCo0.9Sb0.1O3-δ (SCS) cubic perovskite cathode, a dense BaCe0.5Zr0.3Y0.16Zn0.04O3-δ (BCZYZn) electrolyte was fabricated in situ metal oxide on a porous anode support by gel-casting and suspension spray, which is cost-effective, easy to realize, and suitable for mass-production. The key part of this process is to directly spray well-mixed suspension of BaCO3, CeO2, ZrO2, Y2O3 and ZnO instead of pre-synthesized BCZYZn ceramic powder on the anode substrate. With SCS cubic perovskite cathode synthesized by gel-casting on the bi-layer, single cells were assembled and tested with H2 as fuel and the static air as oxidant. An open-circuit potential of 0.987 V, a maximum power density of 364 mW cm-2, and a low polarization resistance of the electrodes of 0.07 Ω cm2 was achieved at 700 °C.
Original language | English (US) |
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Pages (from-to) | 590-593 |
Number of pages | 4 |
Journal | Journal of Alloys and Compounds |
Volume | 478 |
Issue number | 1-2 |
DOIs | |
State | Published - Jun 10 2009 |
Externally published | Yes |
Keywords
- Chemical synthesis
- Electrode materials
- Ionic conduction
- Thin films
- X-ray diffraction
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry