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Tuning the Structure of Pd@Ni–Co Nanowires and Their Electrochemical Properties

2024; American Chemical Society; Volume: 15; Issue: 15 Linguagem: Inglês

10.1021/acs.jpclett.4c00376

1948-7185

Dariusz Łukowiec, Magdalena Gwóźdź, Alina Brzęczek‐Szafran, Tomasz Wasiak, Dawid Janas, Jerzy Kubacki, Stanisław Wacławek, Adrian Radoń,

Advanced battery technologies research

One-dimensional transition metal materials are promising supports for precious metals used in energy production processes. Due to their electrochemical properties, 3d-group metals (such as Ni, Co, and Fe) can actively interact with catalysts by a strong metal–support interaction. This study shows that changing the Ni:Co ratio makes it possible to modulate the structure of the catalyst supports, which, in turn, provides a tool for designing their electrical and electrochemical properties. For example, Ni1–Co9 shows the highest electrical conductivity (5.8–10–4 S/cm) among all of the materials examined. On the contrary, the Pd@Ni7–Co3 system presents the highest mass activity (>2000 mA mg–1) at 0.7 V, exceeding by several times that of commercial Pt/C (>300 mA mg–1) at the same potential. Our study opens the gateway for applications of bimetallic transition metal nanowires in catalytic conversion and energy production processes.