Structural design considerations for micromachined solid-oxide fuel cells

被引：72

作者：

Srikar, VT ^{[1
]}

Turner, KT ^{[1
]}

Ie, TYA ^{[1
]}

Spearing, SM ^{[1
]}

机构：

[1] MIT, Dept Aeronaut & Astronaut, Cambridge, MA 02139 USA

来源：

JOURNAL OF POWER SOURCES | 2004年 / 125卷 / 01期

关键词：

portable power generation; solid-oxide fuel cell; MEMS;

D O I：

10.1016/j.jpowsour.2003.07.002

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Micromachined solid-oxide fuel cells (muSOFCs) are among a class of devices being investigated for portable power generation. Optimization of the performance and reliability of such devices requires robust, scale-dependent, design methodologies. In this first analysis, we consider the structural design of planar, electrolyte-supported, muSOFCs from the viewpoints of electrochemical performance, mechanical stability and reliability, and thermal behavior. The effect of electrolyte thickness on fuel cell performance is evaluated using a simple analytical model. Design diagrams that account explicitly for thermal and intrinsic residual stresses are presented to identify geometries that are resistant to fracture and buckling. Analysis of energy loss due to in-plane heat conduction highlights the importance of efficient thermal isolation in microscale fuel cell design. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：62 / 69

页数：8

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