F111 局所平衡に基づく固体酸化物形燃料電池燃料極の3次元数値シミュレーション手法の開発(OS5 水素・燃料電池)

概要

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The scheme of calculating SOFC anode polarization based on electrochemical local equilibrium is proposed. The simulation uses three-dimensional structure, which is reconstructed from cross sectional images of Ni/YSZ cermet anode. The cross-sectional images are obtained by a dual-beam focused ion beam-scanning electron microscope (FIB-SEM). Gaseous, ionic and electronic transport equations, and the electrochemical reaction at three-phase boundary (TPB) are solved using the Lattice Boltzmann Method (LBM). In the LBM, the gas mole fraction, electron and ionic electrochemical potential distributions are considered. Gas transport is modeled using the Dusty Gas Model (DGM). The numerical simulation is performed under 0.7A/cm^2. This numerical method is considered to be a promising tool for predicting SOFC electrode polarization.
一般社団法人日本機械学会の論文
2009-06-28