Epitaxial growth of Pd clusters on N-doped Ag nanowires for oxygen reduction reaction  

作　　者：Qinhe Guan Shiwei Sun Xiaohang Ge Fan Zhang Lijie Qu Chao Yin Weiyong Yuan Lianying Zhang 

机构地区：[1]Institute of Materials for Energy and Environment,College of Materials Science and Engineering,Qingdao University,Qingdao 266071,China [2]Ningbo Innovation Centre,Zhejiang University,Ningbo 315100,China [3]College of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310027,China

出　　处：《ChemPhysMater》2025年第1期71-77,共7页化学物理材料(英文)

基　　金：financial support from the National Natural Science Foundation of China(22379078).

摘　　要：Efficient and stable Pt-free electrocatalysts for oxygen reduction reaction(ORR)are indispensable for future fuel cells.Herein,we describe a heterostructure of Pd nanocrystals(PdNCs)on N-doped Ag nanowires(NWs)synthesized using a direct epitaxial growth strategy with a Pd loading of only 9.5 wt.%.The PdAg bimetallic heterostructure showed the highest mass activity among reported PdAg-based ORR electrocatalysts and exhibited excellent stability,with only a 1.5 mV decay in the half-wave potential even after 20000 cycles of continuous testing.The remarkably enhanced activity and durability can be attributed to the distinct advantages of the ultrasmall PdNCs,cocatalysts of N-doped AgNWs,and their heterointerfaces.This work reveals that the epitaxial growth of a heterostructure on a stable support is a promising strategy for promoting catalytic performance.

关 键 词：N doping Epitaxial growth PdAg heterostructure Ag nanowires Oxygen reduction 

分 类 号：TB3[一般工业技术—材料科学与工程]