Electrochemical Properties of Tubular SOFC Based on a Porous Ceramic Support Fabricated by Phase-Inversion Method  

作　　者：Zongying Han Yuhao Wang Zhibin Yang Minfang Han 

机构地区：[1]Union Research Center of Fuel Cell, School of Chemical and Environmental Engineering, China University of Mining and Technology [2]State Key Laboratory of Power Systems, Department of Thermal Engineering, Tsinghua University

出　　处：《Journal of Materials Science & Technology》2016年第7期681-686,共6页材料科学技术（英文版）

基　　金：?nancial support from the National Basic Research Program of China(973 Program,No.2012CB215404);the National Natural Science Foundation of China(Nos.51261120378 and 51402355);Beijing Natural Science Foundation(No.2154056);Specialized Research Fund for the Doctoral Program of Higher Education(SRFDP,No.20130023120023)

摘　　要：In this work, a tubular ceramic-supported solid oxide fuel cell （SOFC） was successfully fabricated by a low cost and simple process involving phase-inversion, brush coating and co-sintering. Properties in- cluding sintering behavior, microstructure of the tubular support as well as the electrochemical properties of single cell were investigated. The results show that a porous tubular support with finger-like pores and macrovoids was obtained after phase-inversion process. The tubular support is proved to be gaspermeable after sintering at 1400 ℃ with shrinkage of about 34%. The maximum power density of single tubular SOFC is 100 mW/cm2 and 122 mW/cm2 at 850 ℃ when fed with wet methane and hydrogen, respectively. The current collection, thickness of electrolyte and gas permeability of tubular support should account for the large total resistance. The present tubular design could be expected to deliver a higher voltage for longer support with several segmented-in-series cell stacks.In this work, a tubular ceramic-supported solid oxide fuel cell （SOFC） was successfully fabricated by a low cost and simple process involving phase-inversion, brush coating and co-sintering. Properties in- cluding sintering behavior, microstructure of the tubular support as well as the electrochemical properties of single cell were investigated. The results show that a porous tubular support with finger-like pores and macrovoids was obtained after phase-inversion process. The tubular support is proved to be gaspermeable after sintering at 1400 ℃ with shrinkage of about 34%. The maximum power density of single tubular SOFC is 100 mW/cm2 and 122 mW/cm2 at 850 ℃ when fed with wet methane and hydrogen, respectively. The current collection, thickness of electrolyte and gas permeability of tubular support should account for the large total resistance. The present tubular design could be expected to deliver a higher voltage for longer support with several segmented-in-series cell stacks.

关 键 词：Phase-inversion method Ceramic support Tubular solid oxide fuel cell SEGMENTED-IN-SERIES 

分 类 号：TQ174.1[化学工程—陶瓷工业] TM911.4[化学工程—硅酸盐工业]