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This analysis employs discrete element methods to link microstructural parameters and electrochemical performance in BZCY-SDC-LSCF electrodes, suggesting optimized designs.
This study employs a discrete element method based on random particle packing to investigate the association of microstructural parameters and electrochemical performance in BZCY-SDC-LSCF composite electrodes. The validity of random accumulation of particles is first determined by comparison with seepage theory. Then, the effect of LSCF volume fraction within the composite electrode on the distribution of electrochemical reaction active sites under two different particle radius ratios was systematically investigated, focusing on quantitatively analyzing the following key functional parameters: 1) Volumetric density of percolated effective three-phase boundaries (TPBs): SDC-LSCF-pore TPBs; 2) Volumetric density of percolated effective double-phase boundaries (DPBs): LSCF-pore DPB; 3) Volumetric density of percolated contact area between LSCF-BZCY and SDC-BZCY; 4) Percolated contact area fraction for LSCF-BZCY and SDC-BZCY interfaces. This significantly advances subsequent research on cathode multiscale processes in solid oxide fuel cells (SOFCs).
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Zhou et al. (2025) studied this question.
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