Lee, Seungho Song, Hwa Seob Hyun, Sang Hoon Kim, Joosun Moon, Jooho 2024-01-20T20:02:18Z 2024-01-20T20:02:18Z 2021-09-04 2010-01-01 0378-7753 https://pubs.kist.re.kr/handle/201004/131792 Core-shell type La0.6Sr0.4Co0.2Fe0.8O3-d (LSCF)-Sm0.2Ce0.8O2-d (SDC) powders are synthesized to achieve a high-performance durable cathode for intermediate temperature solid oxide fuel cells (IT-SOFCs). The SDC core size is controlled so that all core particles are surrounded by the LSCF particles with no unattached spots. Such a core-shell composite cathode develops an ideal microstructure with improved phase contiguity, homogeneity, and maximized triple-phase boundary density. The cathode that involves an SDC core of 500 nm exhibits the lowest interfacial polarization resistance (0.265 Omega cm(2) at 650 degrees C), as well as long-term stability during both thermo-cyclic and electrochemically accelerated tests. (C) 2009 Elsevier B.V. All rights reserved. English ELSEVIER IMPEDANCE LSCF-SDC core-shell high-performance durable composite cathode Article 10.1016/j.jpowsour.2009.06.079 1 JOURNAL OF POWER SOURCES, v.195, no.1, pp.118 - 123 JOURNAL OF POWER SOURCES 195 1 118 123 scie scopus 000272883200015 2-s2.0-69349093523 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article IMPEDANCE Cathode Durability Composite Core-shell particles Solid oxide fuel cell