| Autor: |
Liao, Y., Bierschenk, D. M., Barnett, S. A., Marks, L. D. |
| Zdroj: |
Fuel Cells; October 2011, Vol. 11 Issue: 5 p635-641, 7p |
| Abstrakt: |
The electrolyte/anode interface in solid oxide fuel cells with La0.9Sr0.1Ga0.8Mg0.2O3–δelectrolytes and composite anodes containing La0.8Sr0.2Cr0.82Ru0.18O3–δand Ce0.9Gd0.1O2–δ(GDC) was studied using transmission electron microscope Z‐contrast imaging and energy dispersive X‐ray spectroscopy. The anode/electrolyte interface of an operated cell had numerous defective regions in the electrolyte, immediately adjacent to anode GDC particles. These areas had a different chemical composition than other electrolyte regions and were crystallographically inhomogeneous. These regions were not observed in a cell reduced in hydrogen that was not operated, suggesting that they were the result of combined electrical and chemical potential gradients present during cell operation. Ru nanoparticles were observed on the chromite surfaces of the operated. |
| Databáze: |
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