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In this article, a series of PdCox metal catalysts deposited on graphene (rGO) as supporting materials were synthesized by electrodeposition. The composition and structure of the as-synthesized PdCox/rGO nanocomposite electrocatalysts were characterized by field emission scanning electron microscope, energy dispersive spectroscopy and Fourier transform infrared spectroscopy. Their electrochemical performances for ethanol electrooxidation were examined in alkaline medium. The results indicate that the compositions of the as-synthesized electrocatalysts are close to the metal ion concentration ratios in the precursors. The metal particle sizes of PdCox/rGO binary electrocatalys are smaller than the particle sizes of Pd/rGO and Co/rGO monometallic electrocatalysts. The PdCo3.0/rGO electrocatalyst possesses the highest electrocatalytic activity and best stability for ethanol electrooxidation in alkaline environment.

PdCox/rGO Nanocomposite Electrocatalysts Synthesized by Electrodeposition for Ethanol Electrooxidation in Alkaline Medium