Gd_(1-x)Sr_xCoO_(3-δ)系阴极材料粉体的GNP法合成及表征  

Synthesis and Their Characterization of Gd_(1-x)Sr_xCoO_(3-δ) as Cathode Materials by GNP Method

作　　者：王亚楠[1] 周和平[1] 

机构地区：[1]清华大学材料科学与工程系新型陶瓷与精细工艺国家重点实验室,北京100084

出　　处：《稀有金属材料与工程》2007年第A02期599-601,共3页Rare Metal Materials and Engineering

摘　　要：采用甘氨酸—硝酸盐(GNP)法合成了GdSrCoO_(3-δ)及Gd_(1-x)Sr_xCoO_(3-δ)(x=0.1～0.5),用TG-DTA、XRD、SEM等对产物形成过程及微结构进行了表征。钙钛矿的结构随着x的增大而转变为对称性更高的晶系,当x=0.4时由正交晶系转变为立方晶系,并给出了晶系转变的XRD证据。GdSrCoO3-δ and Gd1-xSrxCoO3-δ（x=0.1-0.5） were synthesized using glycine-nitrate process （GNP）.The formation process of perovskite phase and microstructure of powders were characterized by TG-DTA, XRD, and SEM. All the powders with different doping amounts of Sr^2＋ on A-site were single phase solid solutions, and the stable perovskite phase was formed completely after calcination at 1200 ℃. The crystal structures of the solid solutions transfer to a higher symmetrical perovskite and X-ray spectra was provided to back up the claim.

关 键 词：GNP Gd1-xSrxCoO3-δ IT-SOFC 阴极材料 

分 类 号：TB383.3[一般工业技术—材料科学与工程]