Lee, JH Kim, J Kim, SW Lee, HW Song, HS 2024-01-21T07:41:37Z 2024-01-21T07:41:37Z 2021-09-02 2004-01 0167-2738 https://pubs.kist.re.kr/handle/201004/137967 Electrical properties of Y2O3-doped CeO2-rich ZrO2-CeO2 system were characterized with a view point of its point-defect structural scheme. Theoretical calculation of partial electronic and ionic conductivity from total conductivity was done to investigate the combined homovalent and aliovalent doping effect on the overall electrolytic property. According to our study, combined homovalent and aliovalent doping can be one of the key solutions to overcome the fatal disadvantage of limited electrolytic stability of doped ceria system by which properly enhances the ionic conductivity and suppresses the electronic conductivity all at once. Feasibility and limitation of Y2O3-doped CeO2-rich ZrO2-CeO2 system as a potential alternative electrolyte material for low or intermediate temperature SOFC were discussed. (C) 2003 Elsevier B.V. All rights reserved. English ELSEVIER DEFECT STRUCTURE DOPED CERIA CONDUCTIVITY CEO2 POLYCRYSTALS Characterization of the electrical properties of Y2O3-doped CeO2-rich CeO2-ZrO2 solid solutions Article 10.1016/j.ssi.2003.10.001 1 SOLID STATE IONICS, v.166, no.1-2, pp.45 - 52 SOLID STATE IONICS 166 1-2 45 52 scie scopus 000220610200006 2-s2.0-1442335875 Chemistry, Physical Physics, Condensed Matter Chemistry Physics Article DEFECT STRUCTURE DOPED CERIA CONDUCTIVITY CEO2 POLYCRYSTALS doped ceria solid electrolyte electrical conductivity defect structure SOFC