摘要
用新制备的(Zr,Gd)(OH)x·yH2O共沉淀作前驱体,在强碱性介质中水热合成了立方相(ZrO2)0 92(Gd2O3)0 08纳米晶.(ZrO2)0 92(Gd2O3)0 08纳米晶在较低的温度(1450℃)下烧结,制得了致密的固体电解质陶瓷样品,与通常的高温固相合成方法相比,烧结温度降低了150℃以上.本文还测定了水热反应介质pH值分别为13,11,9的陶瓷样品800℃～1000℃下的燃料电池性能.结果表明,该系列样品的燃料电池匀具有稳定的放电性能,在这一系列中又以用水热反应介质pH=9的陶瓷样品组成的燃料电池的性能最高,在1000℃下,其短路电流密度为240mA·cm-2.
(ZrO_2)_(0.92)(Gd_2O_3)_(0.08) nanocrystallites with cubic phase were hydrothermally prepared in basic media by co-precipitate precursor of (Zr, Gd)(OH)_x·yH_2O. The compact nanocrystalline powders were sintered at 1450℃, which was over 150℃ lower than traditional solid-state reaction temperature. The performances of the fuel cells were investigated at temperatures between 800℃ and 1000℃.The results showed : (ZrO_2)_(0.92)(Gd_2O_3)_(0.08)(pH=9) exhibited maximum short-circuit density of 240 mA·cm^(-2)..
出处
《苏州大学学报（自然科学版）》
CAS
2004年第1期63-67,共5页
Journal of Soochow University(Natural Science Edition)
基金
国家自然科学基金资助项目(20171034)
