Nanocomposite Ag–LSM solid oxide fuel cell electrodes

摘要: Abstract Advances in infiltration technology have enabled the creation of innovative electrode architectures that are key to highly effective SOFC anodes and cathodes. In this work, an Ag-infiltrated has been created using a pre-sintered porous scandia-stabilized zirconia (SSZ) backbone. The well-sintered SSZ provides connected ion-conducting pathway throughout electrode, while nanometer thickness Ag particle layer minimizes oxygen transport resistance otherwise limits reaction rates typical composite electrodes. new had minimal activation polarization by 750 °C. allowed for incorporation additional nanoscale electrocatalysts. Here, Ag–LSM (strontium-doped lanthanum manganate) was produced, takes advantage each component catalyst demonstrates further enhanced effectiveness cathode metal catalyst, producing relatively stable cell power densities 316 mW cm −2 at 0.7 V (and 467 mW cm peak ∼0.4 V) over 500 h.