Oh, Eun-Ok Whang, Chin-Myung Lee, Yu-Ri Park, Sun-Young Prasad, Dasari Hari Yoon, Kyung Joong Kim, Byung-Kook Son, Ji-Won Lee, Jong-Ho Lee, Hae-Weon 2024-01-20T09:32:02Z 2024-01-20T09:32:02Z 2021-09-05 2014-07 0272-8842 https://pubs.kist.re.kr/handle/201004/126642 A dense gadolinia-doped ceria (GDC) interdiffusion barrier layer as thin as 300 nm was successfully fabricated on a rigid anode/electrolyte bilayer substrate using the chemical solution deposition (CSD) process for intermediate temperature solid oxide fuel cells (SOFCs). Drying-related macro-defects were removed by employing drying control chemical additives (DCCA), which effectively relieved drying stresses. The major process flaws caused by the constraining effects of the rigid substrate were completely eliminated by the addition of GDC nanoparticles into the chemical solution, which suppressed the generation of microstructural anisotropy by mitigating the predominant hi-axial substrate constraints. As a consequence, a thin film GDC interlayer was successfully deposited with a high volumetric density, effectively preventing the chemical interaction between the electrolyte and cathode during the fabrication process and subsequent operation. The cell test and microstructural analysis confirmed excellent electrochemical performance and structural and chemical stability. The CSD process presented in this paper is considered to be a promising technology for the practical preparation of GDC thin film bather layers for intermediate temperature SOFCs based on the film quality, processing costs and potential for large-scale production. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved. English ELSEVIER SCI LTD ELECTRICAL-CONDUCTIVITY PERFORMANCE IMPROVEMENT CATHODE ELECTROLYTE MICROSTRUCTURE INTERLAYER LA PEROVSKITES INTERFACES STABILITY Fabrication of thin-film gadolinia-doped ceria (GDC) interdiffusion bather layers for intermediate-temperature solid oxide fuel cells (IT-SOFCs) by chemical solution deposition (CSD) Article 10.1016/j.ceramint.2014.01.008 1 CERAMICS INTERNATIONAL, v.40, no.6, pp.8135 - 8142 CERAMICS INTERNATIONAL 40 6 8135 8142 scie scopus 000335201800060 2-s2.0-84897419378 Materials Science, Ceramics Materials Science Article ELECTRICAL-CONDUCTIVITY PERFORMANCE IMPROVEMENT CATHODE ELECTROLYTE MICROSTRUCTURE INTERLAYER LA PEROVSKITES INTERFACES STABILITY A. Films C. Electrical properties E. Fuel cells Microstructure Gadolinium-doped ceria (GDC)