Effect of voltage and temperature on NO removal with power generation in SOFC with V sub(2)O sub(5)-added LSCF-GDC cathode

• Published in: Chemical engineering journal (Lausanne, Switzerland : 1996) Vol. 160; no. 1; pp. 79 - 84
• Main Authors: Huang, Ta-Jen, Chou, Chien-Liang
• Format: Journal Article
• Language: English
• Published: 15.05.2010
• ISSN: 1385-8947
• DOI: 10.1016/j.cej.2010.03.010

A solid oxide fuel cell (SOFC) unit, operating at 800-875 degree C, is constructed with Ni-(Ce,Gd)O sub(2-)x(GDC) as the anode, yttria-stabilized zirconia as the electrolyte, and V sub(2)O sub(5)-added (LaSr)(CoFe)O sub(3)-GDC as the cathode. Both the current-voltage measurement and the fixed-voltage test were performed on electrochemical NO reduction, i.e. DeNO sub()x with power generation. As the voltage decreases, the NO conversion increases but only slightly. DeNO sub()xby SOFC is operational with the O sub(2) concentration of 2-5% and temperature of 800-875 degree C. The NO conversion increases with decreasing O sub(2) and NO concentrations but with increasing temperature. This process of DeNO sub()xby SOFC should be suitable for NO removal from the exhaust of lean burn engines.