Optimizing Lanthanum Chromite Interconnects for Solid Oxide Fuel Cells

August 1, 1999

Conference Paper

Optimizing Lanthanum Chromite Interconnects for Solid Oxide Fuel Cells

Abstract

Optimizing the composition of strontium substituted lanthanum chromites to minimize expansion is not straightforward and must be done carefully to avoid compromising sinterability, electrical conductivity, and mechanical strength. In this study, a variety of lanthanum strontium chromites were modified with V, Cu, and Mg to allow densification in air at 1500?C, and their materials properties were evaluated. Both additives (?5 mole % V and 2 mole% Cu) resulted in full densification of Sr substituted (10 and 15 mole%) lanthanum chromite. Of the compositions evaluated, only La0.85Sr0.15Cr0.95V0.05O3 appeared to be a promising interconnect material, showing

Revised: March 24, 2010 | Published: August 1, 1999

Citation

Armstrong T.R., S.P. Simner, J.S. Hardy, and J.W. Stevenson. 1999. Optimizing Lanthanum Chromite Interconnects for Solid Oxide Fuel Cells. In 6th International Symposium on Solid Oxide Fuel Cells (SOFC-VI), 99, 706-715. Pennington, New Jersey:The Electrochemical Society, Inc. PNNL-SA-33987.