Synthesis of a 3D network of Pt nanowires by atomic layer deposition on carbonaceous template
Shaoren Deng, Mert Kurttepeli, Stella Deheryan, Daire J. Cott,, Philippe M. Vereecken, Johan A. Martens, Sara Bals, Gustaaf van Tendeloo and, Christophe Detavernier
TL;DR
This paper reports a novel method to synthesize a self-supported 3D network of platinum nanowires using atomic layer deposition on carbon nanotubes, significantly increasing electrochemical surface area.
Contribution
It introduces a new two-step synthesis process for creating interconnected Pt nanowire networks with enhanced electrochemical properties.
Findings
50-fold increase in electrochemically active surface area
Successful fabrication of free-standing 3D Pt nanowire network
Detailed TEM and EIS characterization confirming structure and performance
Abstract
The formation of a 3D network composed of free standing and interconnected Pt nanowires is achieved by a two-step method, consisting of conformal deposition of Pt by atomic layer deposition (ALD) on a forest of carbon nanotubes and subsequent removal of the carbonaceous template. Detailed characterization of this novel 3D nanostructure was carried out by transmission electron microscopy (TEM) and electrochemical impedance spectroscopy (EIS). These characterizations showed that this pure 3D nanostructure of platinum is self-supported and offers an enhancement of the electrochemically active surface area by a factor of 50.
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