辽宁石油化工大学学报Issue(2)：4-8,5.DOI:10.3696/j.issn.1672-6952.2014.02.002
中温SOFC复合阴极材料BSCN0.6-30%GDC的表征
Investigation of BSCN0.6-30%GDC Composite Cathode for IT-SOFC
摘要
Abstract
Ba0.6 Sr0.4 Co0.9 Nb0.1 O3-δ(BSCN ) perovskite-type oxide was prepared by the solid state reaction.The high temperature chemical compatibility between BSCN0.6 and Gd0.1 Ce0.9 O1.95 (GDC)were analyzed by XRD.XRD patterns indicate that a week solid solution between BSCN0.6 and GDC takes place after the BSCN0.6-GDC composite material was calcined at high temperature.However,this solid solution does not show a negative effect on the performance of the cathode.The mixture of BSCN0.6 and GDC in a weight ratio of 70∶30 was used as SOFC composite cathode and the electrical property,thermal expansion behavior and electrochemical performance were investigated.The electrical conductivity was found to decrease with increasing GDC content;however,the thermal expansion coefficients (TEC)of BSCN0.6-30%GDC composite cathode decreased,which enhances the thermal match between the cathode and GDC electrolyte.With BSCN0.6-30%GDC as the electrode,the polarization resistance of a symmetrical cell BSCN0.6-30%GDC//GDC is only 0.047~0.012Ω·cm2 in 700~800℃.Therefore,BSCN0.6-30%GDC composite material is a promising IT-SOFC cathode.关键词
中温固体氧化物燃料电池/阴极/电导率/热膨胀/极化阻抗Key words
Intermediate-temperature solid-oxide fuel cells/Cathode/Electrical conductivity/Thermal expansion/Polarization resistance分类
信息技术与安全科学引用本文复制引用
张磊磊,常莹,黄金华,宋昭远,付依丹,刘默..中温SOFC复合阴极材料BSCN0.6-30%GDC的表征[J].辽宁石油化工大学学报,2014,(2):4-8,5.基金项目
辽宁省教育厅科学研究一般项目(L2012135) （L2012135）
辽宁省科技厅自然科学基金项目(201302151)。 （201302151）
