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Preparation of mesoporous and macroporous materials for solid oxide fuel cells

机译:用于固体氧化物燃料电池的中孔和大孔材料的制备

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Mesoporous yttria-stabilized zirconia (YSZ) and YSZ-NiO thermally stable up to 600 °C have been prepared using an anionic surfactant as a structure-directing agent and inorganic nitrates as precursors. Mesoporous YSZ has high sinterability; the relative density of the YSZ sintered at 1250 °C is 94 %. The interfacial resistance between a dense YSZ electrolyte and mesoporous YSZ-Ni-Pt anode is about 2.8 Ωcm{sup}2 at 600 °C. Ordered macroporous Sr{sub}0.5Sm{sub}0.5CoO{sub}3 structures with an average pore size of 140 nm have been prepared using closed-packed arrangement of monodispersed polystyrene spheres as templates. A fuel cell using ordered macroporous Sr{sub}0.5Sm{sub}0.5CoO{sub}3 as the cathode, gadolinia-doped ceria (GDC) film as the electrolyte, and GDC-Ni as the anode generated maximum power densities of 150, 196 and 267 mW/cm{sup}2 at 500, 550 and 600 °C, respectively.
机译:使用阴离子表面活性剂作为结构引导剂和无机硝酸盐作为前体,使用阴离子表面活性剂制备介孔的氧化钇稳定的氧化锆(YSZ)和YSZ -NIO热稳定性高达600℃。介孔YSZ具有高烧结性;在1250℃下烧结的YSZ的相对密度为94%。致密的YSZ电解质和中孔YSZ-Ni-Pt阳极之间的界面抗性在600℃下为约2.8Ωcm{sup} 2。使用闭合包装的聚苯乙烯球体作为模板,已经制备了平均孔径为140nm的平均孔径为140nm的0.5sm {sub} 0.5coo {sub}。一种燃料电池,使用有序的大孔Sr {sub} 0.5sm {sub} 0.5coO {sub} 3作为阴极,掺杂的掺杂的掺杂的二氧化铈(Gdc)膜作为电解质,以及Gdc-ni作为阳极产生的最大功率密度为150 ,196和267mW / cm {sup} 2,分别为500,550和600°C。

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