中文摘要：

流延法制备了SOFCNiO／YSZ阳极，比较了NiO（微米级）和NiO（纳米级）两种NiO，发现由NiO（纳米级）制备的电池在800℃最大放电功率密度257．1mW／cm^2，而由NiO（微米级）制备的电池相同条件下仅为124．9mW／cm^2，原因在于NiO（纳米级）粒径小，制备的阳极三相反应区大。NiO（纳米级）经700℃煅烧后制备的电池最大功率密度增加到369．0mw／cm^2，而800℃和900℃煅烧时减少到169．5和159．0mW／cm^2，因为700℃煅烧增加了NiO的活性，而800和900℃煅烧的NiO粒径增大到1．35μm，制备的阳极减小了反应活性区。YSZ在1200℃煅烧后，粒径从0．2肛m增加到34μm，由于YSZ粒径远大于NiO，导致NiO之间接触不良，制备的电池性能下降到120．0mW／cmz，继续球磨12h后，YSZ粒径减小到0．70μm，NiO和YSZ之间分布均匀，制备的电池放电功率密度提高到447．9mW／cm^2。

英文摘要：

NiO-μm and NiO-nm in SOFC anodes, which were prepared by tape casting, were compared. It was found that,the maximum power density of the cell with NiO-nm as anode was 257. 1mW/cm^2 at 800℃ ,but that was only 124.9mW/cm^2 for NiO-μm. The reason was that the anode with NiO-nm has larger trible phase bound- ary. After calcining at 700℃ for NiO-nm, the power density increased to 369. 0mW/cm^2, while it deceased to 169.5 and 159.0mW/cm^2 at 800 and 900℃ respectively,because NiO calcined at 700℃ improved its activity and held its small particle size,but the particle increased abruptly up to 1.35μm at 800 and 900℃. When YSZ in the anodes calcined at 1200℃, the particle size increased from 0.2-34μm, the maximum power density of the cell decreased to 120.0mW/cm^z, because NiO was isolated by large YSZ. However, these YSZ were milled for 12h, the particle size decreased to 0. 70μm and the power density increased to 447.9mW/cm^2 because of YSZ and NiO distributed uniformity.