Synthesis and Properties of Spinel CoFe2O4 Supported on Graphene Catalysts for Oxygen Reduction Reaction
Spinel CoFe2O4 supported on graphene catalyst is prepared by hydrothermal reaction.The electro-chemical tests show that CoFe2O4-G#400 catalysts possess excellent catalytic ORR performance.The half-wave potential is-0.117 V and the electron transfer number is 3.96.Spinel CoFe2O4 with mixed-valence has high catalytic activity.Graphene as the support can improve electron conductivity and specific surface area of the catalyst,which is beneficial to enhance catalytic oxygen reduction performance.
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