Cu-doped Pd_(7)Te_(3)nanowires for methanol oxidation under alkaline condition  

作　　者：Meng-Qian Li Ze-Qun Han Jun-Cheng Zhu Dong-Po He Qing Hu Wen-Ya Fan Qin-Yuan Hu Xing-Chen Jiao Qing-Xia Chen 

机构地区：[1]Key Laboratory of Synthetic and Biological Colloids,Ministry of Education,School of Chemical and Material Engineering,Jiangnan University,Wuxi,214122,China [2]Hefei National Research Center for Physical Sciences at Microscale,National Synchrotron Radiation Laboratory,University of Science and Technology of China,Hefei,230026,China

出　　处：《Rare Metals》2025年第1期349-357,共9页稀有金属(英文版)

基　　金：supported by the National Natural Science Foundation of China(Nos.22275178 and 22005285);the Fundamental Research Funds for the Central Universities(Nos.JUSRP123013 and JUSRP123015);performed on Hefei advanced computing center;Supercomputing USTC and National Supercomputing Center in Shenzhen are acknowledged for computational support.

摘　　要：Highly active and robust electrocatalysts for methanol oxidation reaction(MOR)are of great significance to the commercial availability of alkaline direct methanol fuel cells(ADMFC).Pd-based nanostructures have received considerable attention in ADMFCs among non-platinum catalysts due to their high activity and tolerance against CO poisoning,which is strongly determined by their composition and structure.Herein,a one-spot hydrothermal method to synthesize Cu-doped Pd_(7)Te_(3)ultrathin nanowires was proposed.The density functional theory calculations show that the Cu doping simultaneously facilitates the desorption of CO^(*)and adsorption of OH,which refreshes the active sites quickly and thus enhances the electroactivity for MOR.Benefiting from their ultrathin architecture and the modified bonding and anti-bonding d states of Pd,Cu-doped Pd_(7)Te_(3)nanowires show about twofold and threefold mass activity promotion and enhanced durability for MOR when compared to the pure Pd_(7)Te_(3)nanowires and commercial Pd/C catalysts.This work not only provides a simple one-step synthesis strategy for Pd-based nanowire catalysts,but also helps to inspire the catalyst design in ADMFC.

关 键 词：Cu doping Pd_(7)Te_(3)NWs Methanol oxidation reaction CO desorption Electronic structure 

分 类 号：TB3[一般工业技术—材料科学与工程]