Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7717156 | International Journal of Hydrogen Energy | 2015 | 7 Pages |
Abstract
The performance and stability of the Sm0.5Sr0.5CoO3-Ce0.8Sm0.2O1.9 composite with a weight ratio of 7:3 (SSC-SDC73) were studied and evaluated as oxygen electrode of high temperature solid oxide electrolysis cells (SOECs). The co-synthesized SSC-SDC73 oxygen electrode exhibited better electrochemical activity and stability than that of physically mixed one for the oxygen oxidation reaction. The effect of anodic polarization current on the co-synthesized SSC-SDC73 oxygen electrode was further investigated under the relative low and high currents at 800 °C in air, respectively. The obtained results demonstrated that co-synthesized SSC-SDC73 oxygen electrode exhibited a better stability under low anodic polarization current. While a higher anodic polarization current could promote the slight agglomerate and delamination of the electrode. Therefore, the polarization current is a key operating parameter for SSC-SDC73 oxygen electrode under the SOEC operation conditions.
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Authors
Wei Jiang, Bo Wei, Zhe Lv, Zhi Hong Wang, Lin Zhu, Yi Qian Li,