Abstract
AbstractIn direct alcohol fuel cells (DAFCs), ethylene glycol (EG) as an advanced power source has attracted intensive interests. However, the electrocatalysis performance and durability of Pt‐based nanocatalysts for EG oxidation are usually unsatisfactory, due to the low utilization of their active sites in the electrocatalytic reaction. Herein, the core‐shell PdPt@Pt nanoclusters (NCs) supported on functionalized reduced graphene oxide (RGO) are reported to facilitate the use of active sites for enhancing the electrocatalytic activity of EG oxidation. The special core‐shell NCs and synergistic effects of Pd and Pt provide numerous active sites which are beneficial to electrocatalysis. The prepared catalysts display remarkable electrocatalytic performance toward EG oxidation, and the peak current density (128.96 mA cm−2) and mass activity (4388.23 mA mg−1metal) are much larger compared to the commercial Pt/C catalysts (7.91 mA cm−2, 897.51 mA mg−1metal). This work could offer an effective strategy to facilitate the utilization of active sites for improving the electrocatalytic activity of Pt‐based nanocatalysts in the DAFCs.
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