The synthesis of Fe/N–C@CNFs and its electrochemical performance toward oxygen reduction reaction

Cu-assisted induced atomic-level bivalent Fe confined on N-doped carbon concave dodecahedrons for acid oxygen reduction electrocatalysis

“…The recent report has shown that PGM-free catalysts using earth-abundant elements emerge as an attractive alternative to improve the sluggish ORR kinetics and consequently facilitate application in PEMFCs, due to their ability to meet requirements of low-cost and high-activity [7][8][9][10]. Up to now, some progresses have been made in transition metal and nitrogen-doped carbon (M-N-C) catalysts, particularly for Fe-N-C catalysts, representing optimal ORR performance in acidic electrolyte [11][12][13][14][15][16][17][18][19][20][21][22][23][39][40]. Ye et al have reported a sort of Fe2 clusters immobilized on N-doped carbon through accurately regulating the number of iron atoms, showing a E1/2 of 0.78 V for acid oxygen reduction electrocatalysis [24].…”