It is well known that the main overpotentials during the operation of a fuel cell are activation, ohmic and concentration overpotentials. In order to operate more efficiently these devices that convert the chemical energy of the fuel into electrical energy, it is necessary to reduce as much as possible the overpotentials aforementioned. Some of the components of a fuel cell are the so called current collectors. These components affect the fuel cell performance mainly by means of two overpotentials, the ohmic and concentration overpotentials. The second one, is however, affected indirectly by the current collector design, since it may only help to distribute more uniformly the gases over the electrodes. The activation overpotential is basically not affected because it is mainly related with the electrode properties such as the exchange current density. In this work, the effect of the current collectors design on the performance of planar Solid Oxide Fuel Cells (SOFCs) is assessed by means of fully three-dimensional numerical simulations by comparing the V-I and power density curves of a planar cell. The goal of this study is not to find the optimal design of the current collectors but a way in which the overpotentials relate with their design in order to propose some helpful recommendations during the design process of these fuel cell components. These recommendations may lead to design an improved or optimal flow distributor.
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ASME 2012 11th Biennial Conference on Engineering Systems Design and Analysis
July 2–4, 2012
Nantes, France
Conference Sponsors:
- International
ISBN:
978-0-7918-4485-4
PROCEEDINGS PAPER
The Effect of Gas Channels-Electrode Interface Area on SOFCs Performance
Julio C. Moreno-Blanco,
Julio C. Moreno-Blanco
University of Guanajuato, Salamanca, GUA, Mexico
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Francisco Elizalde-Blancas,
Francisco Elizalde-Blancas
University of Guanajuato, Salamanca, GUA, Mexico
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Abel Hernandez-Guerrero,
Abel Hernandez-Guerrero
University of Guanajuato, Salamanca, GUA, Mexico
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Cuauhtemoc Rubio-Arana
Cuauhtemoc Rubio-Arana
University of Guanajuato, Salamanca, GUA, Mexico
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Julio C. Moreno-Blanco
University of Guanajuato, Salamanca, GUA, Mexico
Francisco Elizalde-Blancas
University of Guanajuato, Salamanca, GUA, Mexico
Abel Hernandez-Guerrero
University of Guanajuato, Salamanca, GUA, Mexico
Cuauhtemoc Rubio-Arana
University of Guanajuato, Salamanca, GUA, Mexico
Paper No:
ESDA2012-82917, pp. 589-597; 9 pages
Published Online:
August 12, 2013
Citation
Moreno-Blanco, JC, Elizalde-Blancas, F, Hernandez-Guerrero, A, & Rubio-Arana, C. "The Effect of Gas Channels-Electrode Interface Area on SOFCs Performance." Proceedings of the ASME 2012 11th Biennial Conference on Engineering Systems Design and Analysis. Volume 2: Applied Fluid Mechanics; Electromechanical Systems and Mechatronics; Advanced Energy Systems; Thermal Engineering; Human Factors and Cognitive Engineering. Nantes, France. July 2–4, 2012. pp. 589-597. ASME. https://doi.org/10.1115/ESDA2012-82917
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