Ce0.8Gd0.2O1.9-δ氧离子固体电解质的制备.pdf

工艺技术与材料 andMaterials PI口∞∞Technique Ceo．8Gdo．201．9-占氧离子固体电解质的制备 陈爱莲，陈杨，杨建平 (江苏工业学院机械与能源工程学院，江苏常州213016) 粉体。XRD测定表明，Ceo8Gdo201．9。粉体及其烧结体均为立方萤石结构，符合电解质材料的要 求。TEM图片显示所得粉体呈近球形，分散性较好且具有较高的烧结活性。将所合成的粉体在 1 400℃下烧结制得了较致密的固体氧化物电解质陶瓷样品，此烧结温度比普通粉体的烧结温度 (1600℃)低了200oC以上。不同温度下所得烧结样品的Arrhenius曲线研究表明，提高致密度 对提高电导率具有重要意义。 关键词：钆掺杂氧化铈；固体电解质；制备 中图分类号：0614．41文献标识码：A of ofOxideIon PreparationCeo．8Gdo．201．9．艿SolidElectrolyte Chen Ailian，Chen Yang，YangJianping Mechanicaland (Collegeof EnergyEngineering，JiangsuPolytechnicUnwersity，Changzhou213016，China) isa kindofmedium solid with future． Abstract：DopedCe02 temperatureelectrolytegoodapplying was via method and Ceo．8C．do．201．9-anano-powdersynthesizedCO—precipitationbyusingpureCe(N03)3。6H20 as materialsand solutionas test ofXRD result Gd(N03)3’6H20starting NH4HC03 precipitantagent．The indicatedthatboththe andsinteredof areinacubic to powdem bodyCe0．8铀．201．9．d phase，whichaccording the TEM isshownthatthe with near-globular electrolyterequire．Frompictures，it powdergooddispersibility hasbetter madeofthe couldbecondensedtoabove95％of sinteringactivity．Greencompacts nano．powders 200℃lowerthan