Tuning the composition and morphology of carbon nanotube-copper interface

被引：30

作者：

Daneshvar, Farhad ^{[1
]}

Zhang, Tan ^{[1
]}

Aziz, Atif ^{[2
]}

Sue, Hung-Jue ^{[1
]}

Welland, Mark E. ^{[2
]}

机构：

[1] Texas A&M Univ, Polymer Technol Ctr, Dept Mat Sci & Engn, College Stn, TX 77843 USA

[2] Univ Cambridge, Nanosci Ctr, Dept Engn, Cambridge CB3 0FF, England

来源：

CARBON | 2020年 / 157卷

关键词：

Carbon nanotube; Surface modification; Interfacial interaction; Copper; Electrical conductivity; MECHANICAL-PROPERTIES; GOLD NANOPARTICLES; NANOCOMPOSITES; DISPERSION; REDUCTION; OXIDATION; COATINGS; IONS; XPS; CU;

D O I：

10.1016/j.carbon.2019.10.084

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Carbon nanotube (CNT)-copper nanocomposites are promising materials for light-weight high-ampacity conductors. The key issue in hybridization of CNT and metal is creating a strong bonding between them. This requires proper modification of the CNT surface. However, experimental works on determining the effect of interfacial functionalization on the properties of the metal/CNT system is scarce. In this paper, the effect of CNT surface modification on the morphology, interfacial interactions, and electrical properties Cu/CNT hybrid system is investigated. For this purpose, CNTs with carboxyl, thiol, and nitrogen doped surface groups were used as substrate for growth of Cu particles via a facile electrochemical process. It is observed that not only the morphology but also the chemical state of the Cu deposits are affected by the surface functional group on CNT. Thiol group significantly enhances copper wettability towards CNT, facilitating a uniform deposition of copper, and impedes oxidation. Also, Cu/CNT thin films fabricated via vacuum filtration that contain thiol-activated CNTs shows four and seven times higher electrical conductivity compared with systems that contain carboxyl and N-doped surface groups, respectively. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：583 / 593

页数：11

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