《Small》: Synergistic Multi-Active Sites in High-Entropy AlloyNanowires Enhances the Methanol Oxidation ReactionPerformances
Peipei Li,+ Qing Hu,+ Wenya Fan,+ Mengqian Li, Chunyue Zhou, Haochen Zhang, Liang Chen,* Zhefei Pan, Xingchen Jiao and Qingxia Chen*
The advancement of nanowire electrocatalysts with high-performance anddurability is crucial for sustainable development. Herein, uniformhigh-entropy alloy (HEA) PtPdRuCuTe nanowires (NWs) are prepared with asimple one-step hydrothermal method. The PtPdRuCuTe NWs demonstrate amass activity of 4200.01 mA mg−1 and excellent stability for methanoloxidation reaction (MOR) under alkaline condition. Specifically, a current ratioof forward and backward scans (If /Ib ) of 5.04, higher than most reportedcatalysts, is achieved, indicating a superior CO anti-poisoning capability.Density functional theoretical calculations reveal that the tuned electronicstructures and multi-active sites facilitate the fast electron transfer during MOR. Furthermore, the incorporation of Ru and Cu into PtPdRuCuTe NWsmitigates the adsorption of CO intermediates, thereby refreshing themulti-active sites and enhancing MOR performances. This work significantlycontributes to the development of HEA NWs and sets a foundation for designof multi-active sites synergistic catalysts with high efficiency.
Figure 1. Illustration of the synergistic effect between multi-active sites in PtPdRuCuTe HEA NWs for MOR
