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A novel BaCe0.5Fe0.3Bi0.2O3–δ perovskite-type cathode for proton-conducting solid oxide fuel cells
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. Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, PR China;1. Key Laboratory for Advanced Battery Materials and System (MOE), School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China;2. School of Physical Science and Technology, Yangtze University, Jingzhou, Hubei 434023, China;1. College of Chemistry & Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing 210009, China;2. Department of Chemical Engineering, Curtin University, Perth, WA 6845, Australia;1. Key Laboratory of Thermal-Fluid Science and Engineering of MOE, School of Energy & Power Engineering, Xi''an Jiaotong University, 710049, People''s Republic of China;2. Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, Xi''an Jiaotong University, Xi''an 710049, People''s Republic of China;1. Department of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China;2. Academy of Fundamental and Interdisciplinary Science, Harbin Institute of Technology, Harbin 150080, China;3. College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China;4. Langfang Yanjing Career Technical College, Langfang 065200, China;1. Anhui Key Laboratory of Low Temperature Co-fired Materials, Department of Chemistry and Engineering, Huainan Normal University (HNNU), Huainan 232038, PR China;2. CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China (USTC), Hefei 230026, PR China;3. Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
Abstract:A perovskite-type BaCe0.5Fe0.3Bi0.2O3-δ (BCFB) was employed as a novel cathode material for proton-conducting solid oxide fuel cells (SOFCs). The single cells with the structure of NiO-BaZr0.1Ce0.7Y0.2O3-δ (BZCY7) anode substrate|NiO-BZCY7 anode functional layer|BZCY7 electrolyte membrane|BCFB cathode layer were fabricated by a dry-pressing method and investigated from 550 to 700 °C with humidified hydrogen (~3% H2O) as the fuel and the static air as the oxidant. The low interfacial polarization resistance of 0.098 Ω cm2 and the maximum power density of 736 mW cm−2 are achieved at 700 °C. The excellent electrochemical performance indicates that BCFB may be a promising cathode material for proton-conducting SOFCs.
Keywords:Proton-conducting SOFCs  Doped barium cerate  Solid oxide fuel cells  Perovskite structure
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