Fabrication of multi-layered solid oxide fuel cells using a sheet joining process

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• 作者：Kwangjin Park ; Changbo Lee ; Joongmyeon Bae ; Youngsung Yoo
• 关键词：Solid oxide fuel cell (SOFC) ; Sheet joining process ; Ceria-based electrolyte ; Sheet cell ; Anode pellet ; Strontium-doped praseodymium cobalt ferrites
• 刊名：International Journal of Hydrogen Energy
• 出版年：2009
• 出版时间：August 2009
• 年：2009
• 卷：34
• 期：16
• 页码：6861-6868
• 全文大小：827 K

文摘

Ceria-based electrolytes can be used in solid oxide fuel cells (SOFCs) that operate at intermediate-temperature due to their high ionic conductivity. However, the difficulty in fabricating a thin and dense ceria-based electrolyte on an anode support is well-known. In this study, a new sheet joining process is suggested to produce a thin and dense ceria-based electrolyte for anode-supported SOFCs. The main idea used with the sheet joining process is a combination of a sheet cell fabricated by tape casting, and an anode pellet, fabricated by pressing. The maximum power density of a single cell, fabricated by the sheet joining process, is 0.315 W cm⁻² at 600 °C in a power generation test when Pr_0.3Sr_0.7Co_0.3Fe_0.7O_3−δ was used as the cathode material. The performance durability of a single cell is tested over 1000 h of operation in which a dense electrolyte was observed to survive.