Degradation Mechanisms in Solid-Oxide Fuel and Electrolyzer Cells: Analytical Description of Nickel Agglomeration in a Ni/YSZ Electrode
| Autor: | Rüdiger-Albrecht Eichel, Izaak C. Vinke, L.G.J. de Haart, L. Kröll |
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| Rok vydání: | 2017 |
| Předmět: |
Electrolysis
Materials science Economies of agglomeration Nucleation Oxide General Physics and Astronomy chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention Nickel chemistry.chemical_compound Chemical engineering chemistry law Electrode Solid oxide fuel cell Particle size 0210 nano-technology |
| Zdroj: | Physical Review Applied. 7 |
| ISSN: | 2331-7019 |
| DOI: | 10.1103/physrevapplied.7.044007 |
| Popis: | Nickel agglomeration in the fuel electrode of a solid oxide fuel cell spoils its performance, so the ability to understand, predict, and minimize this effect is of great interest. The authors present an analytical model of Ni nucleation, revealing the time evolution of average particle size based on the electrode's initial microstructure and the cell's operating conditions. Their approach applies to all such two-component porous systems where only one component agglomerates, and could be extended for atmospheres with more than two reactants, as in Co electrolysis, or for systems in which both solid phases tend to clump. |
| Databáze: | OpenAIRE |
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