La0.6Sr0.4Co0.2Fe0.8O3 as the anode and cathode for intermediate temperature solid oxide fuel cells

The perovskite material La0.6Sr0.4Co0.2Fe0.8O3 (LSCF-6428) has been conside red as both the anode and cathode in solid oxide fuel cells (SOFCs) operati ng at intermediate temperatures (550-700 degrees C). Solid electrolyte coul ometry (SEC) has been used to measure the oxygen non-stoichiometry as a fun ction of temperature and ambient oxygen partial pressure, thus enabling kin etic data relating to oxygen transport in cathodes to be correlated with th e material oxygen vacancy concentration. The catalytic activity towards met hane oxidation, and susceptibility to deactivation through carbon depositio n have both been investigated by temperature programmed methods, and compar ed with data for the conventional Ni/YSZ anode material. (C)2000 Elsevier S cience B.V. All rights reserved.