Performance and Electrochemical Characterisation of Thin Electrolyte SOFCs

The performance and electrochemical behavior of two anode-supported thin electrolyte cells, with different manufacturing parameters, is determined by polarization measurements and electrochemical impedance spectroscopy (EIS). In addition to characterization, a previously suggested equivalent circuit...

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Bibliographic Details
Published in:ECS transactions 2008, Vol.13 (26), p.235-248
Main Authors: Ramos, Tânia G., Hjelm, Johan, Wandel, Marie, Hagen, Anke, Mogensen, Mogens
Format: Article
Language:English
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Summary:The performance and electrochemical behavior of two anode-supported thin electrolyte cells, with different manufacturing parameters, is determined by polarization measurements and electrochemical impedance spectroscopy (EIS). In addition to characterization, a previously suggested equivalent circuit consisting of a series resistance (Rs) and five arcs to describe the polarization resistance of the cell is tested. The aim is to breakdown and assign the losses to each individual cell component around open circuit voltage at selected temperatures. As will be seen, the proposed in-depth electrochemical characterization can provide valuable guidelines for production/performance optimization.
ISSN:1938-5862
1938-6737
DOI:10.1149/1.3050396