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

Authors :
Karl T. Chuang
Xian-Zhu Fu
Zhengrong Xu
Jing-Li Luo
Alan R. Sanger
Source :
Electrochimica Acta. 55:1145-1149
Publication Year :
2010
Publisher :
Elsevier BV, 2010.

Abstract

About 20 nm precursor powders for BaCe0.85Y0.15O3−δ (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.

Details

ISSN :
00134686
Volume :
55
Database :
OpenAIRE
Journal :
Electrochimica Acta
Accession number :
edsair.doi...........1b291571482e22ec7ee332bc553860a8
Full Text :
https://doi.org/10.1016/j.electacta.2009.10.010