Journal of Catalysis
Journal of Catalysis
5 years ago

Cu2O@C core/shell nanoparticle as an electrocatalyst for oxygen evolution reaction

Cu2O@C core/shell nanoparticle as an electrocatalyst for oxygen evolution reaction
This study aims to develop an effective and inexpensive oxygen evolution reaction (OER) electrocatalysts for efficient water splitting. Cu2O nanoparticles coated with carbon (Cu2O@C) were successfully synthesized by photocatalytic method. As a novel non-noble-metal OER catalyst, the Cu2O@C exhibited excellent OER efficiency with an onset overpotential of 250mV and a Tafel slope of 63mVdecade−1. This catalyst maintained its catalytic activity for at least 100h and required only an overpotential of 330mV to attain a current density 10mAcm−2 GEO. During OER catalysis, the carbon shell served as a conducting media to quicken the charge transfer and as a protective layer to enhance the phase stability and prevent the aggregation of Cu2O nanoparticles.

Publisher URL: www.sciencedirect.com/science

DOI: S0021951717301951

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