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Thin-Membrane Solid-Acid Fuel Cell

Uda, Tetsuya and Haile, Sossina M. (2005) Thin-Membrane Solid-Acid Fuel Cell. Electrochemical and Solid-State Letters, 8 (5). A245-A246. ISSN 1099-0062. http://resolver.caltech.edu/CaltechAUTHORS:UDAessl05

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Abstract

Solid-acid fuel cells (SCFCs) utilize an anhydrous, nonpolymeric proton conducting electrolyte that can operate at slightly elevated temperatures. By supporting thin CsH2PO4 electrolyte membranes (25-36 µm), on porous stainless steel gas-diffusion electrodes, SAFCs with peak power densities as high as 415 mW/cm^2 were obtained. Cells were operated at ~240°C with humidified H2 supplied to the anode and humidified O2 supplied to the cathode. Despite the thinness of the membranes, the open-circuit voltages were high, 0.91-1.01 V. These results transform SAFCs from laboratory curiosities into highly competitive energy conversion devices.


Item Type:Article
Additional Information:©2005 The Electrochemical Society (Received 27 October 2004; published 24 March 2005) Funding for this work has been provided by the National Science Foundation, Division of Materials Research, and the Office of Naval Research, Office of Electrochemical Power Science and Technology. The authors thank Dr. D. A. Boysen and Dr. C. R. I. Chisholm for useful discussions. The California Institute of Technology assisted in meeting the publication costs of this article.
Subject Keywords:fuel cells; membranes; solid electrolytes; electrochemical electrodes; porous materials; stainless steel; caesium compounds; hydrogen compounds
Record Number:CaltechAUTHORS:UDAessl05
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:UDAessl05
Alternative URL:http://dx.doi.org/10.1149/1.1883874
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:4845
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:11 Sep 2006
Last Modified:26 Dec 2012 09:01

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