Sulfur‐Tolerant Redox‐Reversible Anode Material for Direct Hydrocarbon Solid Oxide Fuel Cells

Abstract
A novel composite anode material consisting of K2NiF4-type structured Pr0.8Sr1.2(Co,Fe)0.8Nb0.2O4+δ (K-PSCFN) matrix with homogenously dispersed nano-sized Co-Fe alloy (CFA) has been obtained by annealing perovskite Pr0.4Sr0.6Co0.2Fe0.7Nb0.1O3-δ (P-PSCFN) in H2 at 900 °C. The K-PSCFN-CFA composite anode is redox-reversible and has demonstrated similar catalytic activity to Ni-based cermet anode, excellent sulfur tolerance, remarkable coking resistance and robust redox cyclability.