Carbon black/sulfur-doped graphene composite prepared by pyrolysis of graphene oxide with sodium polysulfide for oxygen reduction reaction

- Novel strategy to fabricate S-GNs via annealing of S-GO in Ar at optimized temperature, 1000 °C.
- The resulted nanocomposites are studied by FESEM, FTIR, XRD, XPS and electrochemical methods.
- The most active composite (S-GNs-1000) is mixed with carbon black (CB), preventing agglomeration.
- The S-GNs-1000-CB has shown excellent electrocatalytic activity for ORR in alkaline solutions.