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A three-dimensional mathematical model for the anode of a direct ethanol fuel cell

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  • Gomes, R.S.
  • De Bortoli, A.L.

Abstract

In this paper, we develop a mathematical model to analyze a direct ethanol fuel cell (DEFC). The three-dimensional model is able to predict the flow on all layers of the fuel cell and allow a better analysis of physical and chemical phenomena that occur inside it. In addition, the calculation of mole fraction of species allows one to observe that the diffusion layer has great influence on mass transfer of fuel between the input channel and the catalyst layer. Numerical simulation of reactive flow was made based on the central finite difference method. The equations were integrated in time using the simplified Runge-Kutta multistage scheme. The results obtained are in agreement with the experimental data found in the literature, for different feed concentrations of ethanol and for different operating temperatures of the cell. In this way, the paper contributes to the development of a model for direct ethanol fuel cells, taking into account all losses overpotentials at the anode and the cathode, providing a better understanding of the physical and chemical behavior inside the cell, and on the conversion of chemical energy into electrical energy.

Suggested Citation

  • Gomes, R.S. & De Bortoli, A.L., 2016. "A three-dimensional mathematical model for the anode of a direct ethanol fuel cell," Applied Energy, Elsevier, vol. 183(C), pages 1292-1301.
    • Handle: RePEc:eee:appene:v:183:y:2016:i:c:p:1292-1301
    DOI: 10.1016/j.apenergy.2016.09.083
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    References listed on IDEAS

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    Cited by:

    1. Sánchez-Monreal, Juan & García-Salaberri, Pablo A. & Vera, Marcos, 2019. "A mathematical model for direct ethanol fuel cells based on detailed ethanol electro-oxidation kinetics," Applied Energy, Elsevier, vol. 251(C), pages 1-1.
    2. Michaela Roschger & Sigrid Wolf & Kurt Mayer & Matthias Singer & Viktor Hacker, 2022. "Alkaline Direct Ethanol Fuel Cell: Effect of the Anode Flow Field Design and the Setup Parameters on Performance," Energies, MDPI, vol. 15(19), pages 1-16, October.
    3. Steil, M.C. & Nobrega, S.D. & Georges, S. & Gelin, P. & Uhlenbruck, S. & Fonseca, F.C., 2017. "Durable direct ethanol anode-supported solid oxide fuel cell," Applied Energy, Elsevier, vol. 199(C), pages 180-186.

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