NiO-YSZ纳米复合粉体的制备及其表征  

Preparation and Characteristic of NiO-YSZ Nanocomposite Powders

作　　者：郑育英[1,2] 廖世军[1] 黄慧民[2] 王俏运[2] 

机构地区：[1]华南理工大学化学与化工学院,广州510641 [2]广东工业大学轻工化工学院,广州510006

出　　处：《材料工程》2011年第8期68-71,共4页Journal of Materials Engineering

基　　金：广东工业大学博士启动资助项目(083010);广东省211学科资助项目(412110904)

摘　　要：以氯氧化锆、硝酸钇、硫酸镍为原料,采用超声波-共沉淀法制备NiO-YSZ纳米复合粉体。通过TEM,TPR与XRD等测试手段,分析产物形貌、晶相及还原过程,对不同Ni含量的Ni-YSZ材料的电导率通过四端电极法进行了测定。结果表明:产物粒径分布窄,颗粒小,分散性好;Ni的质量分数为50%时较为合适。对机械混合法和超声波-共沉淀法制备得到的Ni-YSZ材料的电化学阻抗谱进行了比较,采用超声波-共沉淀法得到的Ni-YSZ具有较小的电阻。NiO-YSZ nanocomposite powders were successfully prepared by ultrasonic co-precipitation method,with ZrOCl2·8H2O,Y（NO3）3·6H2O,NiSO4·7H2O as raw materials.The morphology,crystal structure and reducing process of the products were studied by TPR,XRD and TEM etc.The conductivity of Ni-YSZ with different Ni content was determined through the Four-terminal electrode method.The results showed that the products were small diameter,narrow size distributions,and the mass fraction of 50%Ni was more appropriate.The electrochemical impedance spectra of Ni-YSZ prepared by ultrasonic co-precipitation method was compared with Ni-YSZ prepared by mechanical mixing method,it showed that the former had smaller resistance than the latter.

关 键 词：燃料电池 NiO-YSZ 超声波-共沉淀法 电导率 

分 类 号：TB31[一般工业技术—材料科学与工程]