Electrochemical NOx Reduction with Power Generation in Solid Oxide Fuel Cells with Cu-Added ( LaSr ) ( CoFe ) O3 – ( Ce , Gd ) O2 − x Cathode

Abstract

A process for nitric oxides (, NO plus ) removal by solid oxide fuel cells (SOFCs) can easily reduce in the flue gases to zero and also generate an electrical current. An yttria-stabilized zirconia electrolyte-supported SOFC unit cell was constructed with Ni–gadolinia-doped ceria (GDC) as the anode and Cu-added –GDC composite as the cathode. tests were carried out at a fixed voltage of 0.55 V and . As the inlet concentration decreases, the conversion increases. The generated current density increases with increasing NO concentration from 150 to 5000 ppm. Increasing concentration from 4 to 8% increases the NO conversion due to increased current density, which increases the oxygen transfer rate. Adding can increase the NO conversion, and also due to increased current density. As the concentration increases from 2 to 8% and the concentration increases from 5 to 15%, the generated current density increases. Adding can decrease both the current density and the NO conversion.