Simulation of the reduction process of solid oxide fuel cell composite anode based on phase field method
Simulation of the reduction process of solid oxide fuel cell composite anode based on phase field method
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DOI：
10.1016/j.jpowsour.2015.11.061
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发表时间：
2016-02
影响因子：
9.2
通讯作者：
Z. Jiao;N. Shikazono
中科院分区：
文献类型：
--
作者：
Z. Jiao;N. Shikazono
还原工艺影响固体氧化物燃料电池镍钇稳定氧化锆复合阳极的初始性能和耐久性。采用相场法对镍钇稳定氧化锆复合阳极的还原过程进行了模拟。通过聚焦离子束扫描电子显微镜获得的氧化镍-氧化钇稳定的氧化锆复合材料的三维重构显微结构被用作模拟的初始显微结构。模型中同时考虑了氧化镍的还原和镍的烧结机理。根据文献数据定义了不同界面处氧化镍的还原速率。模拟结果与不同还原温度下的实验阳极微观结构进行了定性比较。
It is known that the reduction process influences the initial performances and durability of nickel-yttria-stabilized zirconia composite anode of the solid oxide fuel cell. In the present study, the reduction process of nickel-yttria stabilized zirconia composite anode is simulated based on the phase field method. An three-dimensional reconstructed microstructure of nickel oxide-yttria stabilized zirconia composite obtained by focused ion beam-scanning electron microscopy is used as the initial microstructure for the simulation. Both reduction of nickel oxide and nickel sintering mechanisms are considered in the model. The reduction rates of nickel oxide at different interfaces are defined based on the literature data. Simulation results are qualitatively compared to the experimental anode microstructures with different reduction temperatures.