-100-第17卷第4期2022年12月贵阳学院学报(自然科学版)(季刊)JOURNALOFGUIYANGUNIVERSITYNaturalSciences(Quarterly)Dec.2022Vol.17No.4摘要:为提高SOFCs阳极材料的性能,选取SFM作为SOFCs阳极材料,并对该材料进行A位掺杂,选取Ca2+作为掺杂元素,通过溶胶-凝胶法制备不同掺杂量的SCaxFM粉末,采用丝网印刷将阴极浆体涂刷至GDC电解质两侧,在空气中1200℃灼烧2.5h得到阴极电极,阳极浆体采用相同方法得到阳极电极。电极集流体均以银浆为媒介,于电炉800℃灼烧使银浆与电极充分结合,利用导电胶把单电池密封于管Al2O3,外接银线形成闭合回路,采用交流阻抗谱仪进行电化学测试。结果显示,当Ca离子掺杂量为0.1时,FCaxFM具有较高的Mo5+/Mo6+比和最大的晶格氧空位浓度,其所表现出的阳极极化阻抗值最小,在温度为800℃时为0.020Ω·cm2,更接近于原结构,维持性较好。关键词:固体氧化物燃料电池;阳极材料;双钙钛矿材料;电导率中图分类号:TM911.4文献标识:A文章编号:1673-6125(2022)04-0100-05StudyonthePropertiesofCalciumDopedSFMasAnodeMaterialsforSOFCQIULi-qin(CeramicEngineeringDepartment,QuanzhouVocationalCollegeofArtsandCrafts,Quanzhou362500,Fujian,China)Abstract:InordertoimprovetheperformanceofSOFCsanodematerials,SFMwasselectedastheanodematerialofSOFCs,andA-sitedopingwascarriedoutonthematerial.Ca2+wasselectedasthedopingelement,andSCaxFMpowderswithdifferentdopinglevelswerepreparedbythesol-gelmethod.ThecathodepastewascoatedonbothsidesoftheGDCelectrolytebyscreenprinting,andthecathodeelectrodewasobtainedbyburninginairat1200℃for2.5hours.Theanodepastewasobtainedbythesamemethod.Theelectrodecollectingfluidusessilverpasteasthemedium,whichisfullycombinedwiththeelectrodewhenitisburnedat800℃intheelectricfurnace.TheconductiveadhesiveisusedtosealthesinglebatterywiththeAl2O3tube,andthesilverwireisconnectedexternallytoformaclosedloop.TheelectrochemicaltestiscarriedoutusinganACimpedancespectrometer.TheresultsshowthatFCaxFMhasahighMo5+/Mo6+ratioandamaximumlatticeoxygenvacancyconcentrationwhentheCaiondopingamountis0.1.TheanodicpolarizationimpedanceofFCaxFMisthesmallest,anditis0.020Ω·cm2at800℃,whichisclosertotheoriginals...