Numerical modeling of micro single-chamber ceria-based SOFC

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• 作者：Chan-Yeup Chung ; Yong-Chae Chung ; Joosun Kim ; Jongho Lee and Hae-Weon Lee
• 关键词：Micro single ; chamber intermediate temperature SOFC ; Ceria ; based electrolyte ; Computer simulation ; Loss calculation ; Polarization curve prediction
• 刊名：Journal of Electroceramics
• 出版年：2006
• 出版时间：December, 2006
• 年：2006
• 卷：17
• 期：2-4
• 页码：959-964
• 全文大小：415 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Optical and Electronic Materials
  Ceramics,Glass,Composites,Natural Materials
  Characterization and Evaluation Materials
  Electrochemistry
  Crystallography
  
• 出版者：Springer Netherlands
• ISSN：1573-8663

文摘

Performance of intermediate temperature SOFC system of micro scale single-chamber with composite electrodes alternately placed on the ceria-based electrolyte has been successfully evaluated by numerical modeling. The polarization curve was obtained through a series of calculations for ohmic loss, activation loss and concentration loss. The calculation of each loss was based on the consideration of fluid dynamics, convection of fuel-air gas mixture, diffusion and oxygen ion conduction. The performance characteristics of SOFC were quantitatively investigated for various structural parameters such as distance between electrodes and thickness of electrolyte and electrode. The effect of the inflow direction of fuel-air mixture on the performance of the fuel cell was analyzed.