Ion-Etching-Induced Defect Engineering toward Porous Fe-N-C Catalysts for Efficient Oxygen Reduction Reaction

Key Points

• The aim is to investigate how ion-etching can improve the performance of Fe-N-C catalysts for oxygen reduction reactions.
• Applied ion etching to modify Fe-N-C catalyst structure.
• Assessed catalytic performance in oxygen reduction reactions.
• Analyzed defects and porous structures created through etching.
• Enhanced catalytic activity observed in modified Fe-N-C catalysts.
• Improved efficiency metrics compared to untreated catalysts.
• Formation of a more porous structure correlated with performance gains.