Effects of manganese oxides on the activity and stability of Ni-Ce0.8Sm0.2O1.9 anode for solid oxide fuel cells with methanol as the fuel
| Autor: | Lijun Fan, Yongdan Li, Xiaojing Zhi, Ping Li, Yicheng Zhao, Nianjun Hou, Xueli Yao, Guochang Ding, Tian Gan, Boran Chen |
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| Přispěvatelé: | Collaborative Innovation Center of Chemical Science and Engineering Tianjin, Tianjin University, Industrial chemistry, Department of Chemical and Metallurgical Engineering, Aalto-yliopisto, Aalto University |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Oxide chemistry.chemical_element 02 engineering and technology Manganese Electron Methanol electro-oxidation 010402 general chemistry 01 natural sciences Catalysis chemistry.chemical_compound Lattice oxygen Solid oxide fuel cell Polarization (electrochemistry) ta215 Manganese oxides General Chemistry 021001 nanoscience & nanotechnology Anode 0104 chemical sciences chemistry Chemical engineering Carbon deposition Methanol 0210 nano-technology |
| Zdroj: | Catalysis Today. 330:222-227 |
| ISSN: | 0920-5861 |
| Popis: | Ni-MnOx-Ce0.8Sm0.2O1.9 (SDC) composites are synthesized and investigated as anode materials of solid oxide fuel cells fed with methanol. The lowest anodic polarization resistance is obtained when the molar ratio of Mn to Ni is 0.05:0.95. The high catalytic activity is attributed to the transfer of electrons from Ni to Mn and the increase of the content of the lattice oxygen in the anode. The single cell with that anode and SDC-carbonate composite electrolyte exhibits a maximum power density of 722 mW cm-2 at 700 °C. Mn also increases the resistance to carbon deposition of the anode due to the high lattice oxygen content and the redox cycle of the Mn species. The stability of the single cell is enhanced with the increase of the content of Mn in the anode. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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