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Sn-doped Ni/YSZ anode catalysts with enhanced carbon deposition resistance for an intermediate temperature SOFC

Paper ID Volume ID Publish Year Pages File Format Full-Text
47284 46466 2010 7 PDF Available
Title
Sn-doped Ni/YSZ anode catalysts with enhanced carbon deposition resistance for an intermediate temperature SOFC
Abstract

Solid oxide fuel cells (SOFCs), capable of operating in an intermediate temperature range with a high power density, are fabricated using Sn-doped Ni/YSZ as an anode catalyst with a functional layer between the anode and electrolyte. The cell shows a high power density of 0.41 W cm−2 at 650 °C when operated using humidified methane fuel. A comparison of this cell with a single cell prepared without Sn shows that the long-term stability is greatly improved; the Sn-doped Ni/YSZ cell operates for 137 h, whereas the Ni/YSZ cell ceases operation within 27 h. A minimal level of Sn-doping yields the best cell performance; higher levels of Sn-doping results in occupation of most catalytic active sites, causing poorer performance. In the case that carbon deposited on the Sn-doped Ni/YSZ surface during operation is removed, the long-term stability of the cell is further improved, and the cell operates stably for 300 h without degradation. The quantity and distribution of Sn on the anode surface remains nearly unchanged over the course of operation.

Keywords
Solid oxide fuel cell; Methane; Tin; Carbon resistance; Ni/YSZ
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Sn-doped Ni/YSZ anode catalysts with enhanced carbon deposition resistance for an intermediate temperature SOFC
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 97, Issues 1–2, 9 June 2010, Pages 108–114
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us