화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.59, 17-27, March, 2018
DOI10.1016/j.jiec.2017.10.001  Export Citation
Engineered co-precipitation chemistry with ammonium carbonate for scalable synthesis and sintering of improved Sm0.2Ce0.8O1.90 and Gd0.16Pr0.04Ce0.8O1.90 electrolytes for IT-SOFCs
L. Spiridigliozzi1, G. Dell’Agli1, 2, A. Maroccoa1, G. Accardo3, †, M. Pansini1, S.P. Yoon3, H.C. Ham3, and D. Frattini4
  • 1Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Via G. Di Biasio 43, 03043 Cassino, FR, Italy
  • 2INSTM — National Interuniversity Consortium of Materials Science and Technology, UdR Cassino, Via G. Giusti 9, 50121 Florence, Italy
  • 3Fuel Cell Research Center, Korea Institute of Science and Technology, Hwarangno 14-gil, Seongbuk-gu, Seoul 136-791, South Korea
  • 4Graduate school of Energy and Environment, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul 01811, South Korea
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Nanometric powders of doped and co-doped ceria based ceramics with spherical-like morphology and characterized by very low degree of agglomeration, were prepared by using a simple and cheap synthesis route, easily scalable on industrial level, based on an optimized co-precipitation process with ammonium carbonate as precipitating agent. The as-synthesized powders are completely converted to ceria with fluorite structure. The original morphology and the nanometric features are also preserved. Nearly perfect dense products were obtained after sintering at 1300 C for 3 h, as by SEM and density measurements. Electrochemical measurements proved that they are all suitable as electrolytes for IT-SOFC.
Keywords:Ammonium carbonate;Ceria;Co-precipitation;IT-SOFC;Praseodymium
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