Tuning the Local Coordination Environment of Fe-N-C Catalyst via Sulfur Doping for Enhanced Oxygen Reduction

Key Points

• The aim is to investigate how sulfur doping affects the coordination environment of Fe-N-C catalysts and improves their performance for oxygen reduction.
• Synthesis of Fe-N-C catalysts with varied sulfur doping levels
• Characterization of the catalysts using spectroscopic techniques
• Evaluation of the oxygen reduction reaction performance via electrochemical tests
• Sulfur doping significantly improved the catalytic activity for the oxygen reduction reaction.
• Optimized sulfur levels resulted in the best performance compared to non-doped Fe-N-C catalysts.
• Enhanced coordination environment contributed to more efficient electron transfer during the reaction.