Cone-shaped cylindrical Ce_(0.9)Gd_(0.1)O_(1.95) electrolyte prepared by slip casting and its application to solid oxide fuel cells  

作　　者：SUI Jing DONG Lifeng LIU Jiang 隋静;董立峰;刘江(College of Materials Science and Engineering,Qingdao University of Science and Technology,Qingdao 266042,China;School of Chemistry and Chemical Engi-neering,South China University of Technology,Guangzhou 510641,China)

机构地区：[1]College of Materials Science and Engineering,Qingdao University of Science and Technology,Qingdao 266042,China [2]School of Chemistry and Chemical Engi-neering,South China University of Technology,Guangzhou 510641,China

出　　处：《Journal of Rare Earths》2012年第1期53-56,共4页稀土学报（英文版）

基　　金：Project supported by the National "863" Program of China (2007AA05Z136);the National Natural Science Foundation of China (51172113);the Taishan Scholar Overseas Distinguished Professorship Program from the Shandong Province Government,the Shandong Natural Science Foundation for Distinguished Young Scholars (JQ201118);the Research Foundation for Talented Scholars of Qingdao University of Science and Technology (400-0022374)

摘　　要：A cone-shaped gadolinium doped ceria（Ce0.9Gd0.1O1.95,GDC） electrolyte cylinder with a thin wall was fabricated using slip cast-ing technique.The diameter of the larger open end of the cone-shaped cylinder was 0.85 cm,the length was 1.0 cm,and the thickness of the wall was 0.026 cm after sintering.Both the electrolyte and electrode powders were fabricated by using a glycine-nitrate process.A single solid oxide fuel cell（SOFC） was prepared with the cone-shaped electrolyte,NiO-GDC（70：30 wt.%） anode and Sm0.5Sr0.5CoO3（SSC） cathode.Its electrochemical performance（I-V curve） and electrochemical impedance spectroscopy（EIS） were studied with humidified hydrogen as the fuel and air as the oxidant.The maximum output power density was about 300 ？mW/cm2 at 700 oC.The EIS results showed that the dominant loss of the SOFC was from the ohmic resistance of the electrolyte.A cone-shaped gadolinium doped ceria（Ce0.9Gd0.1O1.95,GDC） electrolyte cylinder with a thin wall was fabricated using slip cast-ing technique.The diameter of the larger open end of the cone-shaped cylinder was 0.85 cm,the length was 1.0 cm,and the thickness of the wall was 0.026 cm after sintering.Both the electrolyte and electrode powders were fabricated by using a glycine-nitrate process.A single solid oxide fuel cell（SOFC） was prepared with the cone-shaped electrolyte,NiO-GDC（70：30 wt.%） anode and Sm0.5Sr0.5CoO3（SSC） cathode.Its electrochemical performance（I-V curve） and electrochemical impedance spectroscopy（EIS） were studied with humidified hydrogen as the fuel and air as the oxidant.The maximum output power density was about 300 ？mW/cm2 at 700 oC.The EIS results showed that the dominant loss of the SOFC was from the ohmic resistance of the electrolyte.

关 键 词：slip casting GDC electrolyte solid oxide fuel cell rare earths 

分 类 号：TM911.4[电气工程—电力电子与电力传动]