Improved solid oxide fuel cell anodes for the direct utilization of methane using Sn-doped Ni/YSZ catalysts

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A single solid oxide fuel cell is fabricated using Sn-doped Ni/YSZ as the anode catalyst. A power density of 0.39 W/cm(2) was obtained using a Sn-doped Ni/YSZ cell with methane fuel at 800 degrees C, which is equivalent to that obtained using a Ni/YSZ cell (0.40 W/cm(2)). Stability tests reveal that the stability of the Sn-doped Ni/YSZ cell is an order of magnitude higher than that of the Ni/YSZ cell. The Sn-doped Ni/YSZ cell operates for 49.0 h. whereas the Ni/YSZ cell stops after 2.3 h. The Ni/YSZ fuel cell is destroyed by cell expansion caused by the rapid accumulation of graphitic coke. In contrast, much less graphitic carbon is deposited on Sn-doped Ni/YSZ, leading to improved stability. (C) 2009 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2009-11
Language
English
Article Type
Article
Keywords

DIRECT OXIDATION

Citation

CATALYSIS COMMUNICATIONS, v.11, no.3, pp.180 - 183

ISSN
1566-7367
DOI
10.1016/j.catcom.2009.09.021
URI
http://hdl.handle.net/10203/201756
Appears in Collection
CBE-Journal Papers(저널논문)
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