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  4. Electrochemical impedance spectroscopy of alkaline methanol oxidation
 
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2017
Conference Paper
Titel

Electrochemical impedance spectroscopy of alkaline methanol oxidation

Abstract
Direct alkaline methanol fuel cell is a perspective technology for economic energy sources. The development of this technology requires advanced methods for the analysis of underlying chemical reactions. Electrochemical impedance spectroscopy is a popular method for analysis of dynamical processes in cells by a direct measurement of linear response function of the system to harmonic perturbations. In this paper, we propose a parameter identification procedure for electrochemical impedance spectroscopy of alkaline methanol oxidation. The procedure is based on decomposition of the linear response function in terms of poles and zeros and cross-fit of the obtained decomposition to the kinetic model using the methods of non-linear programming. The necessary conditions of the applicability of the proposed procedure have been derived and the stability of the method has been confirmed by the numerical experiments.
Author(s)
Clees, Tanja
Fraunhofer-Institut für Algorithmen und Wissenschaftliches Rechnen SCAI
Nikitin, Igor
Fraunhofer-Institut für Algorithmen und Wissenschaftliches Rechnen SCAI
Nikitina, Lialia
Fraunhofer-Institut für Algorithmen und Wissenschaftliches Rechnen SCAI
Steffes-lai, Daniela
Fraunhofer-Institut für Algorithmen und Wissenschaftliches Rechnen SCAI
Pott, Sabine
Fraunhofer-Institut für Algorithmen und Wissenschaftliches Rechnen SCAI
Krewer, Ulrike
Technische Universität Braunschweig
Windorfer, Theresa
Technische Universität Braunschweig
Hauptwerk
Seventh International Conference on Advanced Communications and Computation, INFOCOMP 2017
Konferenz
International Conference on Advanced Communications and Computation (INFOCOMP) 2017
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Fraunhofer-Institut für Algorithmen und Wissenschaftliches Rechnen SCAI
Tags
  • modeling of complex s...

  • non-linear optimizati...

  • parameter identificat...

  • application

  • electrochemistry

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