文献类型：期刊文献

英文题名：Parametric decoupling analysis of pore-scale microstructure and performance for solid oxide fuel cell anode functional layers

作者：Zhang, Zhaohuan[1];Ma, Xiao[1];Du, Haoyu[1];Xu, Kai[2];Zhang, Xiaoqing[2,3];Shuai, Shijin[2]

机构：[1]Tsinghua Univ, Sch Vehicle & Mobil, State Key Lab Intelligent Green Vehicle & Mobil, Beijing 100084, Peoples R China;[2]Tsinghua Univ, Inst Aero Engine, Beijing 100084, Peoples R China;[3]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2026

卷号：665

外文期刊名：JOURNAL OF POWER SOURCES

收录：;EI(收录号：20260720073278);WOS:【SCI-EXPANDED(收录号:WOS:001641381100001)】；

基金：This research is supported by National Key R & D Program of China (Grant No. 2021YFB2500404) , Natural Science Foundation of China (Grant No. 51976100) , China Postdoctoral Science Foundation (Grant No. 2023TQ0170) .

语种：英文

外文关键词：Solid oxide fuel cell; Anode functional layer; 3D reconstruction; Decoupling analysis; Electrochemical performance; lattice Boltzmann method

摘要：The structure of the anode functional layer (AFL) strongly governs the performance of solid oxide fuel cells (SOFCs). However, the AFL exhibits a complex pore-scale three-phase structure, and systematic decoupling analyses of the influence of microstructural parameters on performance are still lacking. In this work, a tunable stochastic reconstruction model for AFL microstructures is established to decouple the key microstructural parameters. The lattice Boltzmann method is used to predict the electrochemical performance of the AFL. The proposed framework is comprehensively validated against literature data in terms of domain size, phase volume fractions, effective diameters, tortuosity, three-phase boundary (TPB), and current-polarization characteristics. It is found that the volume fraction of the ceramic phase and the TPB length density are the dominant descriptors. To maintain sufficiently low ohmic resistance, the ceramic phase fraction within 6 mu m of the electrolyte should reach about 33 %. Reducing TPB length density from 13 mu m/mu m3 to 3 mu m/mu m3 lowers the current density by 63 %-69 %. In addition, smaller or fewer pores increase the mass transfer resistance and result in higher humidity near the electrolyte, which enhances the local reaction current. These results provide quantitative guidelines for tailoring AFL microstructures in compact SOFCs for transportation and distributed power applications.