采用共沉淀法制备了细的Ce0.8Y0.2O1.9(YDC)粉末,并将其应用于钴掺杂的YDC电解质材料.研究了钴元素对材料烧结性能和电性能的影响.结果表明,钴元素显著增加了材料的密度(烧结温度在1000℃时,其密度超过理论密度的98％)和电导率(750℃时0.99 S/m),同时还发现小于1μm尺寸的晶粒具有高的电导率.
Fine Ce0.8Y0.2O1.9(YDC) powders were prepared by chemical co-precipitation.The cobalt-doped YDC electrolytes were prepared by a solid state reaction route.The effect of cobalt ions on the sinterability and electrical conductivity was investigated.Cobalt ions increase the density(over 98％ theoretical density at sintering temperature of 1000℃)and electrical conductivity(0.99 S/m at 750℃ in air).The results also reveal that a smaller grain size (less than 1μm)correlates with a higher conductivity.
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