An analysis of SmBa0.5Sr0.5Co2O5+δ double perovskite oxide for intermediate–temperature solid oxide fuel cells

The main obstacle to solid oxide fuel cells (SOFCs) implementation is the high operating temperature in range of 800–1,000 °C so that it has an impact on costs. SOFCs work at temperatures causing rapid breakdown between layers (anode, electrolyte, and cathode) because they have different thermal expansion. study focused reducing medium range. SmBa0.5Sr0.5Co2O5+δ (SBSC) was studied as a cathode material for IT-SOFCs based Ce0.8Sm0.2O1.9 (SDC) electrolyte. SBSC powder prepared using solid-state reaction method with repeated ball-milling calcining. Alumina grinding balls are used hardness crush smooth SOFC material. specimens were then tested intermediate (600–800 °C) X-ray diffraction (XRD), thermogravimetric analysis (TGA), electrochemical, scanning electron microscopy (SEM) tests. (XRD) pattern can be indexed tetragonal space group (P4/mmm). overall change mass 8 % 125–800 °C. A sample showed oxygen content (5+δ) reached 5.92 5.41 200 800 °C, respectively. High diffusion levels increased surface activity reduction reactions (ORRs) affected by (5+δ). polarization resistance (Rp) samples sintered 1000 4.02 Ωcm2 600 1.04 700 0.42 power density 336.1, 387.3, 357.4 mW/cm2 625 650 675 demonstrates prospective IT-SOFC