A novel bilayered Sr(0.6)La(0.4)TiO(3)/La(0.8)Sr(0.2)MnO(3) interconnector for anode-supported tubular solid oxide fuel cell via slurry-brushing and co-sintering process

作者：Xu Yanjie; Wang Shaorong^*; Liu Renzhu; Wen Tinglian; Wen Zhaoyin

来源：Journal of Power Sources, 2011, 196(3): 1338-1341.

DOI：10.1016/j.jpowsour.2010.07.088

• Tubular solid oxide fuel cell
• Anode-supported
• Interconnector
• Slurry-brushing
• Co-sintering

Considering that conventional lanthanum chromate (LaCrO(3)) interconnector is hard to be co-sintered with green anode, we have fabricated a novel bilayered interconnector which consists of La-doped SrTiO(3) (Sr(0.6)La(0.4)TiO(3)) and Sr-doped lanthanum manganite (La(0.8)Sr(0.2)MnO(3)). Sr(0.6)La(0.4)TiO(3) is conductive and stable in reducing atmosphere, locating on the anode side; while La(0.8)Sr(0.2)MnO(3) is on the cathode side. A slurry-brushing and co-sintering method is applied; the Sr(0.6)La(0.4)TiO(3) and La(0.8)Sr(0.2)MnO(3) slurries are successively brushed onto green anode specimen, followed by co-firing course to form a dense bilayered Sr(0.6)La(0.4)TiO(3)/La(0.8)Sr(0.2)MnO(3) interconnector. For operating with humidified hydrogen and oxygen at 900 degrees C, the ohmic resistances between anode and cathode/interconnector are 0.33 Omega cm(2) and 0.186 Omega cm(2), respectively. The maximum power density is 290 mW cm(-2) for a cell with interconnector, and 420 mW cm(-2) for a cell without it, which demonstrates that nearly 70% of the power output can be achieved using this bilayered Sr(0.6)La(0.4)TiO(3)/La(0.8)Sr(0.2)MnO(3) interconnector.

• 出版日期2011-2-1
• 单位中国科学院上海硅酸盐研究所