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Fabrication of an Anode-Supported Sofc with a Sol-Gel Coating Method for a Mixed-Gas Fuel Cell

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Abstract:

An anode-supported type solid oxide fuel cell (SOFC) is a promising structure resulting in a very high performance because it consists of a very thin electrolyte. In the preliminary stage, we have succeeded in the fabrication of Samaria-Doped Ceria (SDC) thin film on a porous Ni-Al substrate using a sol-gel coating technique. The thin electrolyte film binds the substrate well and a single cell made with the SDC thin-film electrolyte and porous LSM cathode exhibited a good performance in a mixed-gas condition, even at intermediate temperatures. The single cell, consisting of 20 µm thin SDC electrolytes, the porous Ni-Al anode substrate, and a LSM cathode, exhibited an open circuit voltage of 0.82V and a maximum power density of 0.31 W.cm-2 at 700°C with humidified methane and air mixtures. This cell also generated an open circuit voltage of about 1.1V and a maximum power density of 0.34 W.cm-2 at 600°C with humidified hydrogen as the fuel and air as the oxidant.

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Periodical:

Key Engineering Materials (Volumes 277-279)

Pages:

455-461

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.277-279.455

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Online since:

January 2005

Authors:

Nguyen Xuan Phuong Vo, Sung Pil Yoon, Suk Woo Nam, Jong Hee Han, Tae Hoon Lim, Seong Ahn Hong

Keywords:

Anode-Supported SOFC, SDC Thin Film, Sol-Gel Coating Method, Thin Electrolyte

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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