Sm,Nd共掺CeO_2纳米纤维电解质的制备与性能  

Preparation and Properties of Sm, Nd Co-doped CeO_2 Nanofiber Electrolyte

作　　者：欧刚[1] 李彬[1] 刘巍[1] 刘红芹[1] 周静[2] 潘伟[1] 

机构地区：[1]清华大学新型陶瓷与精细工艺国家重点实验室,北京100084 [2]武汉理工大学材料复合新技术国家重点实验室

出　　处：《稀有金属材料与工程》2011年第S1期339-341,共3页Rare Metal Materials and Engineering

基　　金：国家自然科学基金资助(50990302)

摘　　要：利用静电纺丝技术制备了Sm2O3和Nd2O3共掺CeO2纳米纤维固体电解质,通过XRD、TEM和SEM等仪器对其物相和微观结构进行了表征,并利用电化学工作站测量了不同煅烧温度纳米纤维的电导率。实验结果表明不同煅烧温度下的纳米纤维均呈现立方萤石结构,400oC煅烧获得的纳米纤维电解质平均直径为402nm,晶粒尺寸约为5nm,并且其电导率最高。Ce0.8SmxNd0.2-xO1.9 (x=0.05, 0.1, 0.15) (SNDC) powders were synthesized by glycin-nitrate process(GNP). The phase and morphology of the powders and specimens were observed by X-ray diffraction and scan electron microscopy, and electrical conductivity of SNDC ceramics in air and conductive atmosphere were also measured by AC impedance spectroscopy. It is shown that the electrical conductivity and anti-reductive property of Ce0.8Sm0.1Nd0.1O1.9 is the best in SNDC ceramics. Electrical conductivity in air and the rate of electrical conductivity increase in reductive atmosphere at 800 °C is 4.96×10-2 S/cm and 12.56%, respectively.

关 键 词：GNP SOFC SNDC 抗还原性能 

分 类 号：TM911.4[电气工程—电力电子与电力传动]