Optimisation of the Structure of ‘Wanglian’ Bionic Sofc Fuel Cells

Abstract

The key to the optimal design of the support structure lies in the design of the flow field, which affects the electric field and temperature field. Under the same conditions, the homogeneity of a compensated flow field and the Wanglian-type flow field are compared, and the effects of the homogeneity of the two flow field distributions on the polarization curves, temperature distributions, and total power output curves of the SOFC are further analyzed. The results show that the maximum average current density and maximum average power density of Wanglian-type SOFC are enhanced by 52.3% and 38%, respectively, the change of the two-electrode porosity is found to have a greater effect on the O2 mole fraction distribution; with the increase of temperature will lead to the polarization curves and power density curves show a larger magnitude of change, and the limiting performance of SOFC is better.

Keywords: SOFC, COMSOL, Numerical simulation, Wanglian-type flow field, Support structure design