Ordered platinum-bismuth intermetallic clusters with Pt-skin for a highly efficient electrochemical ethanol oxidation reaction

Authors

Binwei Zhang, University of WollongongFollow
Weihong Lai, University of WollongongFollow
Tian Sheng, Anhui University
Xi-Ming Qu, Xiamen University
Yunxiao Wang, University of WollongongFollow
Long Ren, University of WollongongFollow
Lei Zhang, University of Wollongong
Yi Du, University of WollongongFollow
Yan-Xia Jiang, Xiamen University
Shi-Gang Sun, Xiamen University
Shi Xue Dou, University of WollongongFollow

RIS ID

134003

Publication Details

Zhang, B., Lai, W., Sheng, T., Qu, X., Wang, Y., Ren, L., Zhang, L., Du, Y., Jiang, Y., Sun, S. & Dou, S. (2019). Ordered platinum-bismuth intermetallic clusters with Pt-skin for a highly efficient electrochemical ethanol oxidation reaction. Journal of Materials Chemistry A, 7 (10), 5214-5220.

Abstract

The ethanol oxidation reaction is extensively explored, but electrocatalysts that could achieve a complete oxidation pathway to CO 2 /CO 32- are much less reported. Here, we synthesize a monatomic Pt layer (Pt-skin) on ordered intermetallic PtBi clusters (PtBi@Pt) supported on graphene via a single atom self-assembling (SAS) method to form a superior catalyst. The PtBi@Pt with an ultrafine size (∼2 nm) delivers an extremely high mass activity of 9.01 mA μg Pt-1 , which is 8-fold more active than the commercial Pt/C; significantly, in situ Fourier transform infrared spectroscopy indicates that ethanol is completely oxidized to CO 32- on the PtBi@Pt, accompanied by 12 electron transfer, as is further demonstrated by the density functional theory results.

Grant Number

ARC/DE170100928

Grant Number

ARC/DP170101467