Recent advances in Fe (or Co)/N/C electrocatalysts for the oxygen reduction reaction in polymer electrolyte membrane fuel cells

Exploring cheap and stable electrocatalysts to replace Pt for the oxygen reduction reaction (ORR) is significant for the large-scale application of fuel cells, especially in polymer electrolyte membrane fuel cells. In this paper, we have briefly reviewed the recent advances in the Fe (or Co)/N/C ORR catalysts in acidic medium including their preparation, structural characterization and related mechanism.