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Abstract
High-temperature steam electrolysis (HTSE) achieves high efficiency in hydrogen production and plays a critical role in advancing hydrogen-based energy frameworks. Progression from single-cell to multi-cell stacks is essential, but this transition is hindered by the complex interplay of electrical, flow, and thermal management. Modeling is crucial for addressing these complexities, allowing for simulation of cell and stack performance. In this study, 2D axisymmetric modeling of HTSE cell in tubular configuration is performed. A tubular HTSE cell is fabricated and tested in solid oxide electrolysis (SOEC) mode and impedance modeling of the cell is conducted from 200 °C to 820 °C, analyzing cell behavior transition with temperature. Multiphysics modeling parameters are acquired experimentally and modeling results align well with the experimental data. Further cell analysis is carried out with the developed model by acquiring parameters that are challenging to measure experimentally. The study also determines optimal flow conditions for HTSE cells through parametric variations.
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