Effect of the Current Collector on Performance of Anode Supported Microtubular Solid Oxide Fuel Cells

Abstract

Microtubular anodesupported solid oxide fuel cells (خ¼tSOFC) were created with a metallic coil embedded in the anode to act as current collector. The electrochemical performance was experimentally examined by comparing the power density (PD) of خ¼tSOFC with embedded coils of different turns per unit length and composition (nickel and palladium). It is shown that an increase in the turns per unit length results in a proportional current density increase and in a quadratic increment of PD. Additional performance improvement is found for the cell with palladium current collector due to the higher catalytic activity for hydrogen oxidation.