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Palladium‐Coated Single Silver Nanowire Electrodes: Size‐Dependent Voltammetry, Enhanced Chemical Stability, and High Performance for Methanol Oxidation
Author(s) -
Wei Haifeng,
Hua Hongmei,
Zhu Yanyan,
Li Yongxin
Publication year - 2020
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202000851
Subject(s) - palladium , materials science , nanowire , nanomaterials , galvanic cell , cyclic voltammetry , nanotechnology , coating , electrode , electronics , electrochemistry , catalysis , chemical stability , chemical engineering , chemistry , metallurgy , biochemistry , engineering
Silver nanowires (AgNWs) have been extensively studied as promising nanomaterials in optics, next‐generation flexible electronics, and energy‐related fields, but the stability and the properties at single‐nanowire level still need to be investigated carefully. We have successfully prepared single palladium@silver nanowire electrodes (Pd@AgNWEs) by using a laser‐assisted pulling method, followed by a galvanic replacement reaction (GRR). The results show that the chemical stability of AgNWs can be improved greatly by coating a small amount of Pd, and the Pd@AgNWEs exhibit superior electrocatalytic performance in methanol oxidation. This work can give us a new insight to investigate the performance of devices/catalysts at the single‐particle/nanowire level that will benefit research in flexible electronics and energy‐related fields.