Effect of Sintering Process with Co3O4 on the Performance of LSCF-Based Cathodes for Solid Oxide Fuel Cells
| Autor: | Min Hwan Lee, Sean Johnson, Sanchit Khurana, Alireza Karimaghaloo |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment 020209 energy Mechanical Engineering Composite number Kinetics Oxide Sintering 02 engineering and technology 021001 nanoscience & nanotechnology Industrial and Manufacturing Engineering Cathode law.invention chemistry.chemical_compound chemistry law Management of Technology and Innovation Electrode 0202 electrical engineering electronic engineering information engineering General Materials Science Composite material 0210 nano-technology Layer (electronics) Ohmic contact |
| Zdroj: | International Journal of Precision Engineering and Manufacturing-Green Technology. 5:637-642 |
| ISSN: | 2198-0810 2288-6206 |
| Popis: | The impact of the sintering process, especially in terms of sintering temperature and sintering aid concentration, on the ohmic transport and electrode performance of (La0.80Sr0.20)0.95CoO3–δ–gadolinia-doped ceria (LSCF-GDC) cathodes is studied. The ohmic and charge-transfer kinetics exhibit a highly coupled Co3O4 concentration dependency, showing the best performances at an optimum range of 4–5 wt%. This is ascribed to small grain sizes and improved connection between particles. The addition of Co3O4 was also found to have a dominant impact on charge-transfer kinetics in the LSCF-GDC composite layer and a moderate impact on the electronic transport in the current-collecting LSCF layer. Care should be taken to avoid a formation of excessive thermal stresses between layers when adding Co3O4. |
| Databáze: | OpenAIRE |
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