Topology Optimization of Electrolyte-Anode Interfaces in Solid Oxide Fuel Cells

Abstract

Topology optimization of electrolyte-anode interfaces in solid oxide fuel cells is presented. The total amount of reaction current is chosen as an objective function to be maximized. A cylindrical pillar is used as an initial condition, and the interface shape is iteratively updated using the optimization procedure based on the adjoint method. The effects of material properties, such as the ionic conductivities of the electrolyte and the anode, on the geometrical characteristics as well as the electrochemical performance of the optimal structure are investigated systematically.

Influence of microstructure and applied current on the electrical conductivity of SmBaCo2O5+d cathode in solid oxide fuel cell

“…showing the lowest electrical conductivity of the samples fabricated at various sintering temperatures ) powder. Carbon black was selected as a representative pore former because it can form small, uniform, and spherical pores[32,33]. Rectangular bars with the dimensions 25 mm x 6 mm x 4 mm were prepared by pressing SBCO10C_1150 and SBCO10C_1000 mixtures with a pressure of 2 x 10 3 kg/m 2 and sintering them at 1150 o C and 1000 o C. However, the composite cathode heat-treated at 1000 o C was not completely sintered and showed insufficient mechanical stability for conductivity tests, instead a sample bar sintered at 1050 o C, SBCO10C_1050 was prepared and used for the testing procedure.…”