Unusual Sonochemical Assembly between Carbon Allotropes for High Strain-Tolerant Conductive Nanocomposites

Zheng, Zhaoliang ORCID: 0000-0001-6741-6148, Jin, Jidong, Dong, Jin-Chao, Li, Bo, Xu, Guang-Kui, Li, Jian-Feng and Shchukin, Dmitry G ORCID: 0000-0002-2936-804X
(2019) Unusual Sonochemical Assembly between Carbon Allotropes for High Strain-Tolerant Conductive Nanocomposites. ACS NANO, 13 (10). pp. 12062-12069.

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Facile methods toward strain-tolerant graphene-based electronic components remain scarce. Although being frequently used to disperse low-dimensional carbonaceous materials, ultrasonication (US) has never been reliable for fabricating stretchable carbonaceous nanocomposite (SCNC). Inspired by the unusual sonochemical assembly between graphene oxide (GO) and carbon nanotube (CNT), we verified the roots-like GO-CNT covalent bonding, rather than just π-π conjugation, was formed during US. In addition, the shockwave-induced collision in the binary-component system enables a burst of fragmentation at the early stage, spatially homogeneous hybridization, and time-dependent restoration of graphitic domains. All of the above are distinct from extensive fragmentation of a conventional single-component system and π-π conjugative assembly. The optimized SCNC exhibits conductivity comparable to reduced monolayer GO and outperforms π-π assemblies in retaining electrical conductance at a strain of 160%-among one of the best reported stretchable conductors. Raman analysis and mechanics simulation confirm the dominant role of counterweighing between the intrinsic and external strains on the mechano-response and durability of SCNC. This work suggests the guideline of creating multiple-component sonochemical systems for various functional nanocomposites.

Item Type: Article
Uncontrolled Keywords: sonochemistry, graphene oxide, carbon nanotube, nanocomposites, Raman spectroscopy, stretchable electronics
Depositing User: Symplectic Admin
Date Deposited: 03 Oct 2019 15:18
Last Modified: 19 Jan 2023 00:24
DOI: 10.1021/acsnano.9b06366
Open Access URL: https://pubs.acs.org/doi/10.1021/acsnano.9b06366
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3056913