Amorphous CoSn alloys decorated by Pt as high efficiency electrocatalysts for ethanol oxidation

► Pt decorating CoSn amorphous alloys were prepared as an effective and low-cost electrocatalysts for ethanol oxidation. ► The structure of Pt decorated amorphous CoSn alloys could obviously decrease the usage of Pt and enhance its catalytic activity at the same time. ► Amorphous CoSn alloy was decorated by Pt as the catalyst was confirmed to be one of the promising best choices for alcohols oxidation.