摘要
采用柠檬酸／硝酸盐溶胶-凝胶法合成了La0.6Sr0.4Fe0.8Co0.2O3。XRD分析表明,所获粉体为单一相的钙钛矿结构;EDS分析证实,产物中各组成元素相对含量与原料配比一致:TEM观察显示,晶粒尺寸为100～200 nm。以La0.6Sr0.4Fe0.8Co0.2O3作为阴极材料,Ce0.8Gd0.2O1.9为电解质,NiO／Ce0.8Gd0.2O1.9为阳极材料组成单片固体氧化物燃料电池,测试了其输出电性能。结果表明,在650℃工作温度,工作电压为0．5 V时,电流密度为0．45 A／cm2,输出功率密度为0．23 W／cm2。XRD分析表明,阴极La0.6Sr0.4Fe0．8Co0.2O3和电解质Ce0.8Gd0.2O1.9之间未发生固相反应。
La0.6Sr0.4Fe0.8Co0.2O3 powder was synthesized v/a citrate/nitrate sol-gel method. XRD results show that the powder consists of single phase of perovskite. The particle size is from 100 to 200 nm observed by means of TEM. EDS show that the atom percentage of the elements in the powder is consistent with the theoretical value. When the powder.was used as the cathode to compose a H2-O2 solid oxide fuel cell, and Ce0.8Gd0.2O1.9 and NiO/Ce0.8Gd0.2O1.9 were used as electrolyte and anode, respectively, the electrical output properties were measured. At 650 ℃ the maximum output power density of the cell was 0. 23 W/cm^2 while its current density and voltage were 0. 45 A/cm^2 and 0. 5 V, respectively. XRD results show that there was no solid reaction between La0.6Sr0.4Fe0.8Co0.2O3 and Ceo.sGdo.2O1.9.
出处
《应用化学》
CAS
CSCD
北大核心
2007年第1期25-29,共5页
Chinese Journal of Applied Chemistry
基金
国家重点基础研究发展计划项目(973
2004CB619301)
吉林大学985汽车工程计划项目
校内创新基金项目
