The thermomechanical stability of micro-solid oxide fuel cells fabricated on anodized aluminum oxide membranes

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• 作者：Chang-Woo Kwon^a ; Jae-Il Lee^a ; Ki-Bum Kim^a ; ^{kibum@snu.ac.kr} ; Hae-Weon Lee^b ; Jong-Ho Lee^b ; Ji-Won Son^b ; ^{jwson@kist.re.kr}
• 关键词：Micro-solid oxide fuel cell ; Freestanding membrane ; Anodized aluminum oxide ; Platinum electrode ; Thermomechanical stability
• 刊名：Journal of Power Sources
• 出版年：2012
• 期刊代码：58_03787753
• 类别：ce
• 出版时间：15 July, 2012
• 卷：210
• 期：Complete
• 页码：178-183
• 文件大小：910 K

摘要

The thermomechanical stability of micro-solid oxide fuel cells (micro-SOFCs) fabricated on an anodized aluminum oxide (AAO) membrane template is investigated. The full structure consists of the following layers: AAO membrane (600 nm)/Pt anode/YSZ electrolyte (900 nm)/porous Pt cathode. The utilization of a 600-nm-thick AAO membrane significantly improves the thermomechanical stability due to its well-known honeycomb-shaped nanopore structure. Moreover, the Pt anode layer deposited in between the AAO membrane and the YSZ electrolyte preserves its integrity in terms of maintaining the triple-phase boundary (TPB) and electrical conductivity during high-temperature operation. Both of these results guarantee thermomechanical stability of the micro-SOFC and extend the cell lifetime, which is one of the most critical issues in the fabrication of freestanding membrane-type micro-SOFCs.