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Issue 40, 2011
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Spontaneous oscillations of cell voltage, power density, and anode exit CO concentration in a PEM fuel cell

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Abstract

The spontaneous oscillations of the cell voltage and output power density of a PEMFC (with PtRu/C anode) using CO-containing H2 streams as anodic fuels have been observed during galvanostatic operating. It is ascribed to the dynamic coupling of the CO adsorption (poisoning) and the electrochemical CO oxidation (reactivating) processes in the anode chamber of the single PEMFC. Accompanying the cell voltage and power density oscillations, the discrete CO concentration oscillations at the anode outlet of the PEMFC were also detected, which directly confirms the electrochemical CO oxidation taking place in the anode chamber during galvanostatic operating.

Graphical abstract: Spontaneous oscillations of cell voltage, power density, and anode exit CO concentration in a PEM fuel cell

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Publication details

The article was received on 17 Jun 2011, accepted on 26 Aug 2011 and first published on 22 Sep 2011


Article type: Paper
DOI: 10.1039/C1CP21984G
Citation: Phys. Chem. Chem. Phys., 2011,13, 18179-18185
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    Spontaneous oscillations of cell voltage, power density, and anode exit CO concentration in a PEM fuel cell

    H. Lu, L. Rihko-Struckmann and K. Sundmacher, Phys. Chem. Chem. Phys., 2011, 13, 18179
    DOI: 10.1039/C1CP21984G

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