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

Paper ID Volume ID Publish Year Pages File Format Full-Text
52530 46876 2009 4 PDF Available
Title
Improved solid oxide fuel cell anodes for the direct utilization of methane using Sn-doped Ni/YSZ catalysts
Abstract

A single solid oxide fuel cell is fabricated using Sn-doped Ni/YSZ as the anode catalyst. A power density of 0.39 W/cm2 was obtained using a Sn-doped Ni/YSZ cell with methane fuel at 800 °C, which is equivalent to that obtained using a Ni/YSZ cell (0.40 W/cm2). 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.

Keywords
Solid oxide fuel cell; Tin; Doping; Ni/YSZ cermet; Methane; Coke
First Page Preview
Improved solid oxide fuel cell anodes for the direct utilization of methane using Sn-doped Ni/YSZ catalysts
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 11, Issue 3, 25 November 2009, Pages 180–183
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis