Co3O4 nanorods decorated reduced graphene oxide composite for oxygen reduction reaction in alkaline electrolyte

Highly uniform Co3O4 nanorods decorated on reduced graphene oxide (rGO) were prepared by a one-pot

hydrothermal procedure. During the hydrothermal process, Co2+ ions were crystallized to Co3O4 nanorods

and simultaneously GO was reduced to rGO to form the Co3O4/rGO hybrid. The Co3O4/rGO hybrid was

characterized by scanning electron micrographs, X-ray diffraction, X-ray photoelectron spectroscopy,

and Raman spectroscopy. The obtained Co3O4/rGO hybrid exhibits excellent electrocatalytic performance

for oxygen reduction reaction.