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2011-Sustainable Industrial Processing Summit
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| Editors: | Florian K |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2012 |
| Pages: | 646 pages |
| ISBN: | 978-0-9879917-6-8 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
PROPERTIES OF ELECTRODES FOR PROTONIC CERAMIC FUEL CELLS
Yoshitaro Nose1; Tetsuya Uda1; Donglin Han2; Yohei Noda2;1KYOTO UNIVERSITY, Kyoto , Japan; 2KYOTO UNIVERSITY, Kyoto, Japan;
Type of Paper: Regular
Id Paper: 505
Topic: 9
Abstract:
In this work, Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) was synthesized by solid state reaction method, and the investigation for using it as cathode material for protonic ceramic fuel cells (PCFCs) with Y-doped BaZrO3 as electrolyte was performed. The structure of the samples was identified by X-ray diffraction analysis. The morphology was evaluated by scanning electron microscope. The results revealed that BSCF single phase was obtained after being synthesized at 900 oC and 1000 oC from binary oxides, and carbonates. BSCF powder with appropriate particle size about 2 μm for cathode application was obtained after ball-milling and a subsequent decantation. Referring to the compatibility between BSCF and BZY20, when the firing temperature was lower than 900 oC, no formation of other phase was observed. A PCFC cell with electroless-plated Pd as anode, and BSCF as cathode was also fabricated. By evaluating the fuel cell performance, open circuit voltage of 0.981 V, and peak power density of 4.7 mW cm-2 were obtained. Our trial for complex oxides just started to develop cathode in PCFCs. Better performance will be presented in the symposium with detailed analysis of the electrode resistance.