PrBaCo2-xTaxO5+δ based composite materials as cathodes for proton-conducting solid oxide fuel cells with high CO2 resistance |
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| Affiliation: | 1. CAS Key Laboratory of Materials for Energy Conversion, Collaborative Innovation Center of Suzhou Nano Science and Technology, University of Science and Technology of China, Hefei, 230026, PR China;2. Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Ningxia Road No.308, Qingdao, 266071, PR China;3. School of Resource and Environment and Safety Engineering, University of South China, Hengyang, 421001, PR China;4. Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, PR China;1. Faculty of Material Science and Chemistry, China University of Geosciences, Wuhan, 430074, China;2. National Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China;3. Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, 980-8577, Japan;1. International Joint Research Center for Nanophotonics and Biophotonics, School of Science, Changchun University of Science and Technology, Changchun 130022, PR China;2. Nanophotonics and Biophotonics Key Laboratory of Jilin Province, Changchun 130022, PR China;3. Key Laboratory of Physics and Technology for Advanced Batteries, Ministry of Education, College of Physics, Jilin University, Changchun 130012, PR China;1. School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, PR China;2. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0245, USA;1. European Institute For Energy Research (EIFER), Emmy-Noether-Str 11, 76131 Karlsruhe, Germany;2. Laboratoire Agrégats, Interfaces et Matériaux pour l''Energie, Institut Charles Gerhardt, UMR 5253, Université de Montpellier, Place Eugène Bataillon, 34095 Montpellier, France;1. Key Laboratory of Hydraulic Machinery Transients (Wuhan University), Ministry of Education, School of Power and Mechanical Engineering, Wuhan University, Wuhan, Hubei, 430072, China;2. Key Laboratory of Processing and Testing Technology of Glass & Functional Ceramics of Shandong Province, School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, 250353, PR China |
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| Abstract: | PrBaCo2O5+δ (PBC) with high catalytic activity is identified as a prospective cathode material for intermediate temperature solid oxide fuel cells (IT-SOFCs). However, its poor chemical stability hinders its application. To address this problem, a Ta-doping strategy was presented in this study. The cathode with Ta-doping PBC was applied in proton conducting SOFCs. And the influence of Ta-doping on the crystal structure, electrochemical performance, structure stability and electrical conductivity of PBC was investigated. The resistance to CO2 of PBC at elevated temperature is significantly improved with Ta-doping. The electrochemical performance measurements indicated that a low Ta-doping concentration did not change the performance of the cells obviously, while large Ta-doping concentration could lower the fuel cell performance. |
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| Keywords: | SOFC Cathode Tantalum-doping |
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