Lee, Seungho Song, Hwa Seob Hyun, Sang Hoon Kim, Joosun Moon, Jooho 2024-01-20T22:01:38Z 2024-01-20T22:01:38Z 2021-09-03 2009-02-01 0378-7753 https://pubs.kist.re.kr/handle/201004/132752 LSCF powders with a specific surface area of 25.2 m(2) g(-1) and an average particle size of 89 nm a resynthesized by the polymerizable complex method. The use of nanocrystalline LSCF powders allows the fabrication of an interlayer-free nanoporous cathode on top of an ScSZ electrolyte at a low temperature at which non-electrocatalytic secondary phases cannot form. The electrochemical performance of the interlayer-free cathode depends largely on the sintering temperature. A cathode sintered at below 750 degrees C lacks sufficient mechanical adhesion to the electrolyte, while the electrode surfaces are locally densified when sintered at above 800 degrees C. Impedance spectroscopy combined with microstructural evidence reveals that the optimum sintering temperature for LSCF is 750 degrees C. This avoids excess densification and grain growth, and results in the lowest polarization resistance (0.048 Omega cm(2) at 750 degrees C). (c) 2008 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV POLYMERIZABLE COMPLEX METHOD ELECTRICAL-PROPERTIES COMPOSITE CATHODES IMPEDANCE SPECTROSCOPY PERFORMANCE SOFC LA1-XSRXCO1-YFEYO3 MICROSTRUCTURE Interlayer-free nanostructured La0.58Sr0.4Co0.2 Fe0.8O3-delta cathode on scandium stabilized zirconia electrolyte for intermediate-temperature solid oxide fuel cells Article 10.1016/j.jpowsour.2008.10.101 1 JOURNAL OF POWER SOURCES, v.187, no.1, pp.74 - 79 JOURNAL OF POWER SOURCES 187 1 74 79 scie scopus 000263306300010 2-s2.0-58149145460 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article POLYMERIZABLE COMPLEX METHOD ELECTRICAL-PROPERTIES COMPOSITE CATHODES IMPEDANCE SPECTROSCOPY PERFORMANCE SOFC LA1-XSRXCO1-YFEYO3 MICROSTRUCTURE Solid oxide fuel cell Cathode LSCF Interlayer-free electrode Mixed ionic electronic conductor