Analysis of performance optimization of high‐temperature solid oxide electrolytic cell based on the coupling of flow, heat, and mass transfer and electrochemistry

A three-dimensional (3D) model simulating the flow, heat, and mass transfer characteristics of a high-temperature solid oxide electrolytic cell (SOEC) is developed based on coupling gas flow in channels, electrochemical reaction triple-phase boundary electrodes component diffusion porous media electrodes. The comprises several equations such as equation, momentum energy transport equation. computational fluid dynamics method adopted to simulate operating performance (current density distribution, temperature distribution) 3D under different conditions (electrolytic voltage, at inlet, rate pattern). simulation results show that inlet obviously influences hydrogen production by SOEC. In case lower higher can be selected effectively increase current density. When high enough, supply water vapor needs increased prevent inhibition low-concentration reactants, but this may lead reduction conversion. practical operation, voltage should selected, appropriately ensure improve efficiency.