文献类型：期刊文献

英文题名：Multiscale reactive transport in methane-fueled metal-supported solid oxide fuel cell anodes with support holes: a modified multicomponent lattice Boltzmann framework

作者：Zhang, Zhaohuan[1];Ma, Xiao[1];Zhang, Xiaoqing[2];Xu, Kai[3];Ma, Peng[4];Hu, Haoran[4];Shuai, Shijin[3]

机构：[1]Tsinghua Univ, Sch Vehicle & Mobil, State Key Lab Intelligent Green Vehicle & Mobil, Beijing 100084, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai Key Lab Intelligent Sensing & Detect Tech, Shanghai 200237, Peoples R China;[3]Tsinghua Univ, Inst Aero Engine, Beijing 100084, Peoples R China;[4]Beijing Swift New Energy Technol Co Ltd, Beijing, Peoples R China

年份：2026

卷号：690

外文期刊名：JOURNAL OF POWER SOURCES

收录：;EI(收录号：20262721025421);WOS:【SCI-EXPANDED(收录号:WOS:001814977500001)】；

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

语种：英文

外文关键词：Metal-supported solid oxide fuel cell; Multicomponent lattice Boltzmann method; Multiscale reactive transport; Support hole; Methane-fueled

摘要：Methane-fueled laser-drilled metal-supported solid oxide fuel cells (MS-SOFCs) involve coupled multicomponent diffusion, electrochemical oxidation, internal reforming, and carbon-related reactions across multiple structural scales. Here, we develop a multiscale reactive-transport framework based on a modified multicomponent lattice Boltzmann method with temporal interpolation for different lattice speeds and second-order discretization of the diffusion force. Effective transport coefficients are extracted from heterogeneous anode simulations and are then used to construct a larger-scale homogenized model containing support holes. The method is validated against transient diffusion, steady-state diffusion, and diffusion with source terms. Heterogeneous-anode simulations show highly uniform gas compositions, with a maximum mole-fraction difference of only 0.24%, supporting homogenized modeling. In contrast, the support hole introduces pronounced composition non-uniformity: under the baseline condition, CH4 and H2O mole-fraction differences reach 21.96% and 15.53% inside the hole, compared with 5.54% and 4.28% inside the anode. Hole-induced transport limitation increases the CO electrochemical contribution up to 20.94% of the H2 current and intensifies carbon-generation hot spots. Reducing the inter-hole spacing from 100 to 30 mu m increases the total current density by 17.53% but raises the instantaneous carbon-generation rate by 179.72%.