不同流道形式的固体氧化物燃料电池性能分析  

Performance analysis of solid oxide fuel cells with different flow channels

作　　者：王珂[1,2] 褚展鹏 王永庆[2] 李星辰 陈伟[1,2] WANG Ke;CHU Zhan-peng;WANG Yong-qing;LI Xing-chen;CHEN Wei(School of Mechanics and Safety Engineering,Zhengzhou University,Zhengzhou Henan 450002,China;Key Laboratory of Process Heat Transfer and Energy Saving of Henan Province,Zhengzhou University,Zhengzhou Henan 450002,China)

机构地区：[1]郑州大学力学与安全工程学院,河南郑州450002 [2]郑州大学河南省过程传热与节能重点实验室,河南郑州450002

出　　处：《电源技术》2020年第8期1129-1132,1216,共5页Chinese Journal of Power Sources

基　　金：国家自然科学基金资助项目(51476147,51376163);河南省高等学校重点科研项目(18A470005)。

摘　　要：在固体氧化物燃料电池(SOFC)中,流道结构对反应物在三相反应界面的分布具有重要的影响。为研究流道结构对其电化学性能的影响,建立了一个SOFC三维数值模型,对其进行电化学反应,气体的扩散和流动,多组分传递和电池温度场的多物理场耦合,所得结果与实验数据吻合良好。研究发现,将燃料电池通道的几何形状由矩形改为圆形和弓形时,在一定条件下弓形流道和圆形流道的电池输出功率均有所提升,其中弓形流道在0.6 V电压下输出功率密度达到最大,为3 873W/m^2。研究模型及结论对SOFC的结构改进与性能分析具有参考意义。In solid oxide fuel cells(SOFC),the flow channel structure has an important influence on the reactants distribution on the three-phase reaction interface.In order to study the influence of flow channel structure on its electrochemical performance,a three-dimensional numerical model of SOFC was established,which performed the multi-physics coupling of electrochemical reaction,gas diffusion and flow,multi-component transfer and battery temperature field.The obtained results are in good agreement with the experimental data.It's found that when the geometry shape of the fuel cell channel changes from a rectangle to a circular shape and bow shape,the cell output power of the bow and the circular flow channel improves under certain conditions.The bow flow channel has the maximumoutput power of 3873 W/m2 at 0.6 V.The research model and conclusions have reference significance for the structural improvement and performance analysis of SOFC.

关 键 词：固体氧化物燃料电池 多物理场耦合 气体流道 

分 类 号：TM911[电气工程—电力电子与电力传动]