| Autor: |
Nicharee Wongsawatgul, Shinichi Momiyama, Soamwadee Chaianansutcharit, Kenichi Yoshida, Makoto Nanko, Kazunori Sato |
| Předmět: |
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| Zdroj: |
Materials Transactions; 2021, Vol. 62 Issue 12, p1732-1738, 7p |
| Abstrakt: |
The performance of Ni/SrO-doped CeO2 (SrDC) anode-supported cells, combined with the Sm2O3-doped CeO2 (SDC) electrolyte layer, has been investigated for the direct supply of a dry CH4. The SrO content in the Ce1-xSrxO2-x solid solution affects the porous structure of the starting anode support comprising of the sintered NiO and Ce1-xSrxO2-x grains and denseness of the SDC layer by co-sintering. The cell using the 5 mol% SrO-doped CeO2 shows the highest cell performance without time-dependent degradation even at 750°C. This cell (the 5SrDC cell) also provides better cell performance with decreasing operating temperature than the conventional Ni/YSZ anode-supported cell (the YSZ cell); the maximum power density of the 5SrDC cell is higher than that of the YSZ cell by 73% at 650°C. This enhancement effect is discussed in light of the mixed ionic-electronic conduction of the CeO2-based solid electrolytes. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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