采用固相反应法合成了中温固体氧化物燃料电池阴极材料Ln0.6Sr0.4Fe1-χCoχO3-σ（Ln=La,Pr;Nd,Sm和Gd）粉体.对其进行结晶学表征,分析氧含量和失重与温度的关系,并研究了其电导率随温度的变化规律及其与Ce0.8Gd0.2O1.9（CGO）电解质的化学相容性.实验表明,600～800℃;所有样品的电导率均高于100S/cm,其中Nd0.6Sr0.4Co0.8Fe0.2O3-σ的电导率高达600S/cm,并且与CGO电解质都具有良好的化学相容性.
The powders of Ln0.6Sr0.4Fe1-xCoxO3-δ(Ln=La, Pr, Nd, Sm and Gd) were obtained by solid state reactions. The cell
parameters of the specimens were analysised by XRD. The change in mass and oxygen stoichiometry of the samples as a function of temperature was determined
by TGA. The electrical conductivity of the sintered samples was measured as a function of temperature from 100 to 1000℃. It shows that the
electrical conductivity of all these samples is higher than 100S/cm, especially the electrical conductivity of Nd0.6Sr0.4Co0.8Fe0.2O3-δ
can be up to 600S/cm, and all the samples possess good chemical compatibility with Ce0.8Gd0.2O1.9 at 1200℃ for 24h.
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