Transient dynamic and modeling parameter sensitivity analysis of 1D solid oxide fuel cell model

• A multiphysics, 1D, dynamic SOFC model is developed.
• The presented model is validated experimentally in eight different operating conditions.
• Electrochemical and thermal dynamic transient time expressions are given in explicit forms.
• Parameter sensitivity is discussed for different semi-empirical parameters in the model.

In this paper, a multiphysics solid oxide fuel cell (SOFC) dynamic model is developed by using a one dimensional (1D) modeling approach. The dynamic effects of double layer capacitance on the electrochemical domain and the dynamic effect of thermal capacity on thermal domain are thoroughly considered. The 1D approach allows the model to predict the non-uniform distributions of current density, gas pressure and temperature in SOFC during its operation. The developed model has been experimentally validated, under different conditions of temperature and gas pressure. Based on the proposed model, the explicit time constant expressions for different dynamic phenomena in SOFC have been given and discussed in detail. A parameters sensitivity study has also been performed and discussed by using statistical Multi Parameter Sensitivity Analysis (MPSA) method, in order to investigate the impact of parameters on the modeling accuracy.