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Cathode overpotential investigation by means of “Built-in” potential electrode

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Abstract

The objective of the present work is the development of a “built-in” potential electrode method for direct measurements of the cathode and anode overpotentials and the corresponding interface resistances of solid oxide fuel cells (SOFC). The studies were performed on a yttria-stabilised zirconia (YSZ) electrolyte-supported SOFC using La0.8Sr0.2MnO3 as cathode, GDC as protecting layer and Ni-ScSZ cermet as anode. The mesh potential electrode was placed inside the YSZ membrane near the cathode side. Using the combination of the I-U and the impedance measurements with the built-in potential electrode technique, the temperature dependencies of the electrodes and electrolyte contributions to the total cell resistance were determined.

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Authors and Affiliations

  1. Institute of Solid State Physics RAS, ul. Institutskaya 2, 142432, Chernogolovka, Russia

    Ilya Burmistrov & Sergey Bredikhin

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  1. Ilya Burmistrov
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  2. Sergey Bredikhin
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Correspondence to Ilya Burmistrov.

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Burmistrov, I., Bredikhin, S. Cathode overpotential investigation by means of “Built-in” potential electrode. Ionics 15, 465–468 (2009). https://doi.org/10.1007/s11581-008-0302-4

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  • DOI: https://doi.org/10.1007/s11581-008-0302-4

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