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Citation: LEI Ze, ZHU Qing-Shan, HAN Min-Fang. Fabrication and Performance of Direct Methane SOFC with a Cu-CeO₂-Based Anode[J]. Acta Physico-Chimica Sinica, ;2010, 26(03): 583-588. doi: 10.3866/PKU.WHXB20100323 shu

Fabrication and Performance of Direct Methane SOFC with a Cu-CeO₂-Based Anode

1.
Research Center of Fuel Cell on Coal Gasification, School of Chemical and Environmental Engineering, China University of Mining &Technology, Beijing 100083, P. R. China; State Key Laboratory of Multiphase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China

Received Date: 23 December 2009
Available Online: 27 January 2010

Highly porous yttria stabilized zirconia (YSZ) supported dense (ZrO2)0.89(Sc2O3)0.1(CeO2)0.01 (10ScSZ-1CeO2) bilayers were fabricated by removing NiO with a reduction-acid leaching method using NiO-YSZ/10ScSZ-1CeO2 half cells that were prepared by dry-pressing. By allowing Ce and Cu nitrate solutions to infiltrate the porous YSZ matrix, single cells of Cu-CeO2-YSZ/10ScSZ-1CeO2/LSCF (LSCF: La0.6Sr0.4Co0.2Fe0.8O3-δ) were fabricated. The cell's structure was characterized by X-ray diffractometry (XRD) and field-emission scanning electron microscopy (FESEM). Results showed that the porous YSZ matrix of the YSZ/10ScSZ-1CeO2 bilayers prepared by the reduction-acid leaching method was of high porosity (more than 64%) and it was highly connected, which was beneficial for the introduction of Ce and Cu nitrate by infiltration. The 10ScSZ-1CeO2 electrolyte filmwith a thickness of 30 μm was dense and pinhole-free. A single cell composed of Cu-CeO2-YSZ/10ScSZ-1CeO2/LSCF showed excellent generation performance with maximum power densities of 0.29 and 0.09 W·cm-2 at 650 ℃, as well as 0.48 and 0.21 W·cm-2 at 700 ℃using moist hydrogen and methane as fuel, respectively. This excellent performance is attributed to the electrolyte's small ohmic resistance, small cathode polarization resistance, and favorable anode microstructure.
- Solid oxide fuel cell,
- Methane,
- Cu-CeO2,
- Anode,
- Infiltration
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沈阳化工大学材料科学与工程学院沈阳 110142

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Fabrication and Performance of Direct Methane SOFC with a Cu-CeO2-Based Anode

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通讯作者: 陈斌, bchen63@163.com

Fabrication and Performance of Direct Methane SOFC with a Cu-CeO₂-Based Anode