High performance of La0.6Sr0.4Co0.2Fe0.8O3-Ce0.9Gd0.1O1.95 nanoparticulate cathode for intermediate temperature microtubular solid oxide fuel cells

► Grain size of LSCF-GDC nanoparticulate cathode was less than 100 nm. ► Total cathode polarization resistance was only 0.13 Ω cm2 at 600 °C. ► LSCF nanoparticulate cathode contributed to decrease the polarization resistance.