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✦   LIBER   ✦

Fabrication of bi-layered proton conducting membrane for hydrocarbon solid oxide fuel cell reactors

✍ Scribed by Xian-Zhu Fu; Jing-Li Luo; Alan R. Sanger; Zheng-Rong Xu; Karl T. Chuang

Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
790 KB
Volume
55
Category
Article
ISSN
0013-4686

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✦ Synopsis

About 20 nm precursor powders for BaCe 0.85 Y 0.15 O 3-ı (BCY) were synthesized by combustion method. The nanopowder had about 100 times larger specific volume than sintered BCY. A bi-layered proton conducting membrane having a thick porous BCY substrate and an integrally supported dense BCY thin film were co-fabricated facilely by pressing two layers comprising the precursor powder and its mixture with starch, followed by co-sintering at high temperature. Pt was impregnated into the porous BCY layer matrix as anode catalyst for dehydrogenation of ethane to ethylene. A hydrocarbon solid oxide fuel cell with the BCY thin film electrolyte and Pt electrodes demonstrated high selectivity (90.5%) to ethylene at 36.7% ethane conversion with co-generation of 216 mW cm -2 electrical energy output at 700 • C. The ethane conversion and ethylene selectivity increased with current density.

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