Unveiling the critical role of W doping in enhancing oxygen reduction activity of SrCo0.7Fe0.3O3-δ cathode for intermediate temperature SOFCs

Key Points

• The study aims to investigate the impact of W doping on the oxygen reduction activity of SrCo0.7Fe0.3O3-δ cathode for solid oxide fuel cells.
• Evaluated the performance of SrCo0.7Fe0.3O3-δ cathode materials with varying levels of W doping.
• Conducted electrochemical tests to measure oxygen reduction activity.
• Analyzed structural properties using X-ray diffraction and electron microscopy.
• W doping significantly improved the oxygen reduction reaction kinetics.
• Optimal W concentration resulted in the highest electrochemical performance.
• The composite structure enhanced the stability and efficiency of the cathode.