Hydrothermal impregnation synthesis of cobalt pentlandite as anode material of H2S SOFC

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• 作者：Yuxuan Zhang ; Qingyu Gao ; Shaorong Wang
• 刊名：Ionics
• 出版年：2016
• 出版时间：May 2016
• 年：2016
• 卷：22
• 期：5
• 页码：743-749
• 全文大小：970 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Electrochemistry
  Materials Science
  Physical Chemistry
  Condensed Matter
  Renewable Energy Sources
  Electrical Power Generation and Transmission
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1862-0760
• 卷排序：22

文摘

In the present work, cobalt pentlandite (Co₉S₈) is studied as a solid oxide fuel cells (SOFC) anode material which is stable in H₂S-containing fuels and is promising in coal-based SOFCs. Co₉S₈ is synthesized via a simple hydrothermal method. Uniform and fine Co₉S₈ particles are deposited on to the YSZ skeleton directly by using hydrothermal impregnation method and adhered to the skeleton closely after heat treating in N₂. The symmetrical cells are measured in the presence of 50 ppm H₂S–H₂ to determine the electrochemical performance at intermediate temperatures. The polarization resistance is only 0.3385 Ω cm2 at 650 °C. It is concluded that Co₉S₈ exhibits a combination of good electronic conductivity and catalytic activity and has the potential to be used as a sulfur-tolerant anode material of SOFCs.KeywordsCo₉S₈MicrostructureHydrothermal impregnation