Review on core-shell structured cathode for intermediate temperature solid oxide fuel cells |
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| Affiliation: | 1. Center for Fuel Cell Innovation, School of Materials Science and Engineering, State Key Lab of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan, 430074, China;2. Department of Mechanical Engineering, University of South Carolina, Columbia, SC, 29208, United States;3. Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, United States;1. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245, USA;2. New Energy Institute, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China;1. Maryland Energy Innovation Institute, University of Maryland, College Park, MD 20742, United States;2. Department of Materials Science & Engineering, University of Maryland, College Park, MD 20742, United States;1. Ionics Lab, School of Materials Science and Engineering, Chonnam National University, Gwangju, 61186, Republic of Korea;2. Applied Science Research Institute, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea;1. School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, China;2. Faculty of Maritime and Transportation, Ningbo University, Ningbo, 315211, China |
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| Abstract: | Lowing the operating temperature can greatly promote the commercialization of solid oxide fuel cells (SOFCs), however it also results in a significant increase in cell impedance, which is the bottleneck for the development of intermediate temperature SOFCs (IT-SOFCs). Major hurdles in developing conventional single-phase cathode materials for IT-SOFCs are poor electrochemical performance or durability. The investigation of new cathode materials or the optimization of the existing cathodes is imminent for the development of IT-SOFCs. Among them, core-shell structured cathode can combine the advantages of multiple components, and has been demonstrated with excellent oxygen reduction reaction (ORR) catalytic activity and long-term stability. This review summarizes the recent research progress on core-shell structured cathode for enhanced electrochemical performance, long-term stability, CO2 tolerance and Cr tolerance. Furthermore, the future directions are discussed from a perspective of materials design, preparation and characterization. Core-shell structured cathodes are expected to play an increasingly critical role in the commercialization of IT-SOFCs. |
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| Keywords: | IT-SOFCs Electrochemical performance Durability Core-shell structured cathode Cr tolerance |
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