Multi‐component mathematical model of solid oxide fuel cell anode
Multi‐component mathematical model of solid oxide fuel cell anode
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DOI：
10.1002/er.1141
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发表时间：
2005-10
影响因子：
4.6
通讯作者：
M. Hussain;Xianguo Li;I. Dincer
中科院分区：
文献类型：
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作者：
M. Hussain;Xianguo Li;I. Dincer
建立了多孔固体氧化物燃料电池（SOFC）阳极内部多组分物质传输的数学模型。该模型包括阳极电极（衬底）层中的水气移位反应和反应带层中的空间分解电化学反应。采用包含Knudsen扩散的改进的Stefan-Maxwell方程来模拟多孔电极（衬底）和反应区层内的多组分扩散。此外，采用一般的Butler-Volmer方程对反应带层中的电化学反应进行了建模。该模型可以预测SOFC阳极内任何重整气体成分（包括二氧化碳、一氧化碳、氢气和水蒸气）的物质分布。可以模拟SOFC阳极中的化学和电化学反应以及输运过程，从而得出在各种操作和设计条件下的阳极性能。该阳极模型可以与类似开发的阴极模型相结合，形成单个SOFC模型的整体模型。版权所有©2005 John Wiley & Sons， Ltd
A mathematical model describing the multi‐component species transport inside the porous solid oxide fuel cell (SOFC) anode has been developed. The model includes the water–gas shift reaction in the anode electrode (backing) layer and the spatially resolved electrochemical reaction in the reaction zone layer. The modified Stefan–Maxwell equations incorporating Knudsen diffusion were used to model multi‐component diffusion inside the porous electrode (backing) and reaction zone layers. Moreover, the general Butler–Volmer equation was used to model the electrochemical reaction in the reaction zone layer. The model can predict the distribution of species within the SOFC anode for any reformate gas composition involving carbon dioxide, carbon monoxide, hydrogen and water vapour. The chemical and electrochemical reactions as well as transport processes in the SOFC anode can be simulated, yielding the anode performance under various operating and design conditions. This anode model can be coupled with a similarly developed model for the cathode to form an overall model for a single SOFC model. Copyright © 2005 John Wiley & Sons, Ltd.