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Results of Current Density Distribution Mapping in PEM Fuel Cells Dependent on Operation Parameters
Otto-von-Guericke University Magdeburg, Chair Electric Power Networks and Renewable Energy Sources, Universitätsplatz 2, D-39106 Magdeburg, Germany
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Received: 13 June 2013; in revised form: 15 July 2013 / Accepted: 19 July 2013 / Published: 29 July 2013
Abstract: This paper presents in situ measurements of a newly developed current density measurement system for proton exchange membrane fuel cells (PEMFC). While the functional principle and technical evaluation of the measurement system were presented in a previous paper, this paper analyzes the influence of various operation parameters, including multiple start-stop operation, at the anode, cathode and cooling locations on the distribution and long-term development of the current density. The system was operated for 500 h over two years with long periods of inactivity between measurements. The measurement results are evaluated and provide additional information on how to optimize the operation modes of fuel cells, including the start and stop of such systems as well as the water balance.
Keywords: PEM fuel cell; current density measurement; current density distribution; operation optimization
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Heuer, M.; Bernstein, P.A.; Wenske, M.; Styczynski, Z.A. Results of Current Density Distribution Mapping in PEM Fuel Cells Dependent on Operation Parameters. Energies 2013, 6, 3841-3858.
Heuer M, Bernstein PA, Wenske M, Styczynski ZA. Results of Current Density Distribution Mapping in PEM Fuel Cells Dependent on Operation Parameters. Energies. 2013; 6(8):3841-3858.
Heuer, Maik; Bernstein, Paul A.; Wenske, Michael; Styczynski, Zbigniew A. 2013. "Results of Current Density Distribution Mapping in PEM Fuel Cells Dependent on Operation Parameters." Energies 6, no. 8: 3841-3858.