用于制备SOFC电解质膜Sm_(0.2)Ce_(0.8)O_(1.9)的合成及性能研究  

Research on the Performance of Sm_(0.2)Ce_(0.8)O_(1.9)(SDC) Prepared by Different Methods

作　　者：丁姣[1] 刘江[1] 郭为民[1] 

机构地区：[1]华南理工大学化学与化工学院,广州510640

出　　处：《无机材料学报》2009年第1期152-156,共5页Journal of Inorganic Materials

基　　金：广东省科技计划项目(2005B50101007)

摘　　要：分别采用硝酸盐-苷氨酸燃烧法、固相法和柠檬酸硝酸盐法制备了钐掺杂的氧化铈电解质材料Sm0.2Ce0.8O1.9(SDC).采用这三种方法合成的SDC粉末通过料浆喷涂法在多孔的N iO-SDC阳极基底上制备了SDC电解质膜.采用丝网印刷在SDC电解质膜表面制备了Ba0.5Sr0.5Co0.8Fe0.2O3-δ(BSCF)新型阴极,进而制备成固体氧化物燃料电池(SOF-Cs)单电池.采用CH I604B电化学工作站对电池性能进行了测试.采用粒径分析仪对粉末的粒度分布进行了分析.利用扫描电镜(SEM)对合成的粉末和电池的微观结构进行了观察和研究.结果表明,柠檬酸硝酸盐法合成的SDC粉末能够满足料浆喷涂法制备SOFCs薄膜电解质的要求.Sm-doped CeO2-Sm0.2Ce0.8O1.9 （SDC） electrolyte powders were prepared by using glycine-nitrate process, solid-state process and citric-nitrate process, respectively. These three kinds of SDC powders were deposited onto the NiO-SDC anode substrates by colloidal spray coating technique. The single cell was completed after screen printing the BSCF cathode on the SDC electrolyte film. The performance of the single cell was tested by the CHI604B electrochemical work station. The granularity distribution of the SDC powders was analyzed by the HORIBA LA-920 and the microstructure of the cell was investigated by SEM. Results show that SDC electrolyte powders made by citric-nitrate process is content with the colloidal spray coating technique for SOFCS.

关 键 词：固体氧化物燃料电池 钐掺杂的氧化铈 硝酸盐-苷氨酸燃烧法 固相法 柠檬酸硝酸盐法 

分 类 号：O642[理学—物理化学] TM911[理学—化学]