Ultra-high-performance doped carbon catalyst derived from o -phenylenediamine and the probable roles of Fe and melamine

The oPD and melamine are copolymerization and a hybrid copolymers is formed (a). Excessive melamine and melamine monomer in the hybrid copolymers will pyrolyzing and which will lead to forming fluffy, a irregular graphene-like material Fe/oPD–Mela (b). The nitrogen content of nitrogen in Fe/oPD–Mela is high up to 6.83at%. And it exhibits high oxygen reduction activity in both alkaline and acid mediums. In 0.1 M KOH, its current density is about 2.4 times to that of the Pt/C catalyst at 0.90V.