Recent Progress on the Materials of Oxygen Ion-Conducting Solid Oxide Fuel Cells and Experimental Analysis of Biogas-Assisted Electrolysis over a LSC Anode

Christos Drosakis, Savvas Douvartzides, Costas Athanasiou and Georgios Skodras ()
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Christos Drosakis: Department of Mechanical Engineering, School of Engineering, University of Western Macedonia, 50100 Kozani, Greece
Savvas Douvartzides: Department of Mechanical Engineering, School of Engineering, University of Western Macedonia, 50100 Kozani, Greece
Costas Athanasiou: Department of Environmental Engineering, Democritus University of Thrace, 67100 Xanthi, Greece
Georgios Skodras: Department of Mechanical Engineering, School of Engineering, University of Western Macedonia, 50100 Kozani, Greece

Energies, 2024, vol. 17, issue 22, 1-26

Abstract: In this work, the recent achievements in the application of solid oxides fuel cells (SOFCs) are discussed. This paper summarizes the progress in two major topics: the materials for the electrolytes, anode, and cathode, and the fuels used, such as hydrocarbon, alcohol, and solid carbon fuels. Various aspects related to the development of new materials for the main components of the materials for electrocatalysts and for solid electrolytes (e.g., pure metals, metal alloys, high entropy oxides, cermets, perovskite oxides, Ruddlesden–Popper phase materials, scandia-stabilized-zirconia, perovskite oxides, and ceria-based solid electrolytes) are reported in a coherent and explanatory way. The selection of appropriate material for electrocatalysts and for solid electrolyte is crucial to achieve successful commercialization of the SOFC technology, since enhanced efficiency and increased life span is desirable. Based on the recent advancements, tests were conducted in a biogas-fueled Ni-YSZ/YSZ/GDC/LSC commercial cell, to elucidate the suitability of the LSC as an anode. Results obtained encourage the application of LSC as an anode in actual SOFC and SOFEC systems. Thus, H 2 -SOFC demonstrated a satisfying ASR value, while, for biogas-assisted electrolysis, the current values slightly increased compared to the methane-SOFEC, and for a 50/50 biogas mixture of methane and carbon dioxide, the corresponding value presented the higher increase.

Keywords: solid oxide fuel cell; perovskite electrode; electrolyte materials; biogas (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: 2024
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