Cobalt nano-sheet supported on graphite modified paper as a binder free electrode for peroxide electrooxidation

• A novel and binder free Co@graphite/paper electrode is employed for H2O2 electrooxidation.
• The obtained Co@graphite/paper electrode exhibits remarkably high catalytic activity and good stability for the electrooxidation of H2O2.
• The high catalytic activity, low cost and environment-friendly make the Co@graphite/paper electrode as a promising anode material in DPPFC.

A novel and binder free Co@graphite/paper electrode is prepared by electrodeposition Co nano-sheet on the surface of a graphite layer modified paper substrate. The morphology and phase structure of the Co@graphite/paper electrode are characterized by scanning electron microscopy equipped with energy dispersive X-ray spectrometer, transmission electron microscope and X-ray diffractometer. The catalytic activity of the Co@graphite/paper electrode for H2O2 electrooxidation is investigated by means of cyclic voltammetry and chronoamperometry. The catalyst combines tightly with the paper and exhibits a good stability. The oxidation current density reaches to 580 mA cm−2 in 2 mol dm−3 NaOH and 0.5 mol dm−3 H2O2 at 0.5 V. Besides, we illustrate the reaction mechanization of the H2O2 electrooxidation on the Co film.

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