Porous Cu-rich@Cu3Pt alloy catalyst with a low Pt loading for enhanced electrocatalytic reactions

초록

The core-shell nanostructures are used to improve the specific activity of catalysts in electrooxidation reactions. We report a porous Cu-rich@Cu3Pt core-shell using a seeding method. In this method, a hetero-nucleation process is carried out in the presence of cubic Cu2O seeds. Cu-rich@Cu3Pt core-shell is used as an electrocatalyst in electrooxidation reactions. According to the data obtained using transmission electron microscopy (TEM), energy dispersive X-ray analysis (EDX), and X-ray diffraction (XRD), Cu-rich@Cu3Pt has a porous nanostructure and dominant {111} facets. It consists of a well-defined core-shell structure in which a Cu-rich phase is the core and Cu3Pt alloy is the shell. The porous Cu-rich@Cu3Pt exhibits an excellent electrocatalytic performance in methanol oxidation reaction (MOR) and oxygen reduction reaction (ORR). (C) 2016 Elsevier B.V. All rights reserved.

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