A novel design of anode-supported solid oxide fuel cells with Y2O3-doped Bi2O3, LaGaO3 and La-doped CeO2 trilayer electrolyte

作者：Guo, Weimin; Liu, Jiang^*

来源：Journal of Power Sources, 2010, 195(24): 8185-8188.

DOI：10.1016/j.jpowsour.2010.07.039

• Solid oxide fuel cells
• Yttria-doped bismuth oxide
• Strontium- and magnesium-doped lanthanum gallate
• Trilayered composite electrolyte film
• Comparison
• Improvement

Anode-supported solid oxide fuel cells (SOFCs) with a trilayered yttria-doped bismuth oxide (YDB), strontium- and magnesium-doped lanthanum gallate (LSGM) and lanthanum-doped ceria (LDC) composite electrolyte film are developed. The cell with a YDB (18 mu m)/LSGM (19 mu m)/LDC (13 mu m) composite electrolyte film (designated as cell-A) shows the open-circuit voltages (OCVs) slightly higher than that of a cell with an LSGM (31 mu m)/LDC (17 mu m) electrolyte film (designated as cell-B) in the operating temperature range of 500-700 degrees C. The cell-A using Ag-YDB composition as cathode exhibits lower polarization resistance and ohmic resistance than those of a cell-B at 700 degrees C. The results show that the introduction of YDB to an anode-supported SOFC with a LSGM/LDC composite electrolyte film can effectively block electronic transport through the cell and thus increased the OCVs, and can help the cell to achieve higher power output.

• 出版日期2010-12-15
• 单位华南理工大学; 广西科技大学