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A Simple and Accurate Method for High‐Temperature PEM Fuel Cell Characterisation
Author(s) -
Kulikovsky A. A.,
Oetjen H.F.,
Wannek Ch.
Publication year - 2010
Publication title -
fuel cells
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.485
H-Index - 69
eISSN - 1615-6854
pISSN - 1615-6846
DOI - 10.1002/fuce.200900135
Subject(s) - proton exchange membrane fuel cell , electrolyte , cathode , diffusion , tafel equation , analytical chemistry (journal) , materials science , current density , fuel cells , oxygen transport , electrical resistivity and conductivity , current (fluid) , chemistry , oxygen , chemical engineering , thermodynamics , electrode , chromatography , electrochemistry , electrical engineering , physics , organic chemistry , quantum mechanics , engineering
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.