Ce 0.9 Gd 0.1 O 2?x for Intermediate Temperature Solid Oxide Fuel Cells: Influence of Cathode Thickness and Anode Functional Layer on Performance

Visweshwar Sivasankaran, Lionel Combemale, Mélanie François and Gilles Caboche
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Visweshwar Sivasankaran: Laboratoire Interdisciplinaire Carnot de Bourgogne, ICB-UMR6303, FCLAB, CNRS—Université de Bourgogne, Franche-Comté, 9 Avenue Savary, CEDEX BP47870, 21078 Dijon, France
Lionel Combemale: Laboratoire Interdisciplinaire Carnot de Bourgogne, ICB-UMR6303, FCLAB, CNRS—Université de Bourgogne, Franche-Comté, 9 Avenue Savary, CEDEX BP47870, 21078 Dijon, France
Mélanie François: Laboratoire Interdisciplinaire Carnot de Bourgogne, ICB-UMR6303, FCLAB, CNRS—Université de Bourgogne, Franche-Comté, 9 Avenue Savary, CEDEX BP47870, 21078 Dijon, France
Gilles Caboche: Laboratoire Interdisciplinaire Carnot de Bourgogne, ICB-UMR6303, FCLAB, CNRS—Université de Bourgogne, Franche-Comté, 9 Avenue Savary, CEDEX BP47870, 21078 Dijon, France

Energies, 2020, vol. 13, issue 17, 1-11

Abstract: The performances of Intermediate Temperature Solid Oxide Fuel Cell (IT-SOFC) anode-supported planar cells with a 10 cm 2 active surface were studied versus the combination of cathode thickness and the presence of an Anode Functional Layer (AFL). The temperature range was 500 to 650 °C, and Gd 0.1 Ce 0.9 O 2−x (GDC) was used as the electrolyte material, Ni-GDC as the anode material, and La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3−d (LSCF48) as the cathode material. The power density, conductivity, and activation energy of different samples were determined in order to investigate the influence of the cathode thickness and AFL on the performance. These results showed an improvement in the performances when the AFL was not present. The maximum power density reached 370 mW·cm −2 at 650 °C for a sample with a cathode thickness of 50 µm and an electrolyte layer that was 20 µm thick. Moreover, it was highlighted that a thinner cathode layer reduced the power density of the cell.

Keywords: tape casting process; open circuit voltage; activation energy; power density; IT-SOFC (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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