WEI Tao ¹, ZHOU Xinping ¹, ZHONG Wei ¹, GAO Qingyu ¹, LV Xiaoli ¹, WANG Shaorong ^1,2

(1. College of Chemistry and Chemical Engineering, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China; 2. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China)

Abstract:  A cost-effective method was developed to fabricate dense La_0.8Sr_0.2Cr_0.5Fe_0.5O_3-δ(LSCrF) interconnect membrane on NiO-YSZ anode substrate for tubular solid oxide fuel cell (SOFC) applications by one-step dip-coating, and co-sintering of the ceramic interconnect with the anode. The LSCrF powder was synthesized with citric acid assisted sol-gel method, the phase structure was characterized by an XRD, and the particle size distribution of the ball-milled powder was analyzed by a Mastersizer 2000 analyzer. It can be concluded that with the powder calcined at 700 ℃ and ball-milled for 12 h, LSCrF film can be successfully prepared on the anode support of NiO–YSZ by a dipcoating process. After being co-sintered at 1400 ℃, a dense LSCrF interconnect membrane can be obtained.

Key words: SOFC; ceramic interconnect; dip-coating; co-sintering