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A Simple and Accurate Method for High-Temperature PEM Fuel Cell Characterisation

✍ Scribed by A. A. Kulikovsky; H.-F. Oetjen; Ch. Wannek

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
211 KB
Volume
10
Category
Article
ISSN
1615-6846

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✦ Synopsis

Abstract

A set of basic parameters for any polymer electrolyte membrane fuel cell (PEMFC) includes the Tafel slope b and the exchange current density j~*~ of the cathode catalyst, the oxygen diffusion coefficient D~b~ in the cathode gas‐diffusion layer and the cell resistivity R~cell~. Based on the analytical model of a PEMFC [A. A. Kulikovsky, Electrochim. Acta (2004) 617], we propose a two‐step procedure allowing to evaluate these parameters for a high‐temperature PEMFC. The procedure requires two polarisation curves measured at different oxygen (air) stoichiometries. The method is validated using the experimental data obtained with the in‐house designed cell. High quality of fitting confirms validity and accuracy of this approach. The physical background of the method is discussed.

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