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23rd European Symposium on Computer Aided Process Engineering by Ilkka Turunen, Andrzej Kraslawski

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Modelling and identification of the dominant phenomena in hydrogen fuel-cells by the application of DRT Analysis

Vitor V. Lopesa, Carmen M. Rangela and Augusto Q. Novaisa,    aLNEG – National Laboratory/or Energy and Geology, Estrada do Paço do Lumiar, 22, 1649-038 Lisboa, Portugal, E-mail: vitor.lopes@lneg.pt

Abstract

This paper proposes the use of the distribution of relaxation times (DRT) for the analysis of the dynamic behavior of hydrogen fuel-cells. With this aim it presents a new method to compute the DRT directly from electrochemical impedance spectroscopy (EIS) data.

The method is formulated as a nonconvex complex domain optimization problem where each EIS spectra is approximated by a general fractional-order Legendre basis. The DRT ...

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