Structural design considerations for micromachined solid oxide fuel cells


Srikar, V.T., Turner, Kevin T., Ie, Tze Yung Andrew and Spearing, S. Mark (2004) Structural design considerations for micromachined solid oxide fuel cells. Journal of Power Sources, 125, (1), 62-69. (doi: 10.1016/j.jpowsour.2003.07.002).

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Description/Abstract

Micromachined solid-oxide fuel cells (μSOFCs) 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, μSOFCs 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.

Item Type: Article
ISSNs: 0378-7753 (print)
Related URLs:
Keywords: portable power generation, solid-oxide fuel cell, MEMS
Subjects: T Technology
Divisions: University Structure - Pre August 2011 > School of Engineering Sciences
ePrint ID: 22779
Date Deposited: 13 Mar 2006
Last Modified: 27 Mar 2014 18:12
Contact Email Address: kturner@mit.edu
URI: http://eprints.soton.ac.uk/id/eprint/22779

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