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In Ni-YSZ electrode-supported cells, gas diffusion through the electrode support layer can be a significant limitation at high H 2 or H 2 O utilization and high temperature. Conventionally, higher-porosity electrode supports are used to improve diffusion, but this diminishes the cell’s structural integrity. Alternative fabrication methods like freeze-casting and 3D-printing allow for the creation of hierarchical structures with cutouts in the cell surface that improve gas diffusion, but these methods require redesigning processing procedures to obtain the desired materials properties. This work explores the use of laser ablation to pattern cutouts into the electrode support after sintering, enabling a faster mass transport without redesigning the entire fabrication process. Current-voltage measurements of symmetric Ni-YSZ electrode-supported cells with one patterned and one un-patterned electrode demonstrate that laser-patterning improves limiting current density and effective diffusivity by as much as 30%. Mechanical testing of patterned and un-patterned cells demonstrates that patterned cells suffer relatively small reductions in fracture strength.
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This content will become publicly available on May 1, 2026
Fast laser-assisted electrode drying: Probing penetration effects with a laser-electrode interaction model
