Song, Hwa Seob Lee, Seungho Lee, Daehee Kim, Hongyeun Hyun, Sang Hoon Kim, Joosun Moon, Jooho 2024-01-20T19:30:15Z 2024-01-20T19:30:15Z 2021-09-02 2010-05-01 0378-7753 https://pubs.kist.re.kr/handle/201004/131453 A double-layer dual-composite cathode is fabricated and has an ideal cathode microstructure with large electrochemical active sites and enhanced the durability in solid oxide fuel cells (SOFCs). The insertion of a yttria-stabilized zirconia (YSZ)-rich functional layer between the electrolyte and the electrode allows for a graded transition of the YSZ phase, which enhances ionic percolation and minimizes the thermal expansion coefficient mismatch. Electrochemical measurements reveal that the double-layer composite cathode exhibits improved cathodic performance and long-term stability compared with a single-layer composite cathode. A cell with a well-controlled cathode maintains nearly constant interfacial polarization resistance during an 80h accelerated lifetime test. (C) 2009 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV IMPEDANCE SOFC FABRICATION DURABILITY ELECTRODES STABILITY Functionally-graded composite cathodes for durable and high performance solid oxide fuel cells Article 10.1016/j.jpowsour.2009.11.067 1 JOURNAL OF POWER SOURCES, v.195, no.9, pp.2628 - 2632 JOURNAL OF POWER SOURCES 195 9 2628 2632 scie scopus 000274546700030 2-s2.0-73249127563 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article IMPEDANCE SOFC FABRICATION DURABILITY ELECTRODES STABILITY Solid oxide fuel cell composite cathode Functionally-graded layer Durability