摘要
采用溶胶凝胶法制备了La0.7Sr0.3Cr1-xMnxO3-δ(x=0.3,0.4,0.5,0.6)系列阳极粉体。在1000℃下焙烧后,XRD结果显示粉体物相为单一的钙钛矿相。制备以La0.7Sr0.3Cr1-xMnxO3-δ为阳极,Ce0.8Sm0.2O1.9(SDC)为电解质,Pr0.6Sr0.4Co0.8Fe0.2O3-δ-SDC复合阴极的电解质支撑型固体氧化物燃料单电池。由扫描电子显微镜(SEM)观察表明单电池电解质致密,阳极孔径分布均匀,厚度约为20μm,多孔阴极厚度为10μm。采用直流四电极法测试以La0.7Sr0.3Cr0.5Mn0.5O3-δ为阳极用湿氢气作燃料时在800℃下获得最大输出功率为232.84 mW.cm-2,短路电流为0.92 A.cm-2。
The La0.7Sr0.3Cr1-xMnxO3-δ（ x = 0. 3, 0. 4, 0.5, 0.6） was synthesized via sol-gel combus- tion method. The phases of the oxide powders calcined at 1000 ℃ were determined by X-ray diffraction （XRD） , it was found that the single phase perovskite was obtained. The electrolyte （SDC） supported single cells of LSCM/SDC/PSCF-SDC were prepared. The pictures of SEM indicated that the perovskite anode was in porous state with the thickness of 20 μm, and the compact electrolyte was obtained. The LSCM7355 anode single cells fed with humidified hydrogen deliv- ered a reasonable peak density of 232.84 mW·cm-2 at 800 ℃ with four-terminal configuration.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2012年第5期599-604,共6页
Journal of the Chinese Society of Rare Earths
基金
国家自然科学基金资助项目(50872049)
内蒙古自然科学基金资助项目(2010zd04)
