Simple Method to Improve Electrical Conductivity of Films Made from Single-Walled Carbon Nanotubes

Nanomaterials
Bogumila KumanekDawid Janas

Abstract

Despite the widespread use of sonication for individualization of nanomaterials, its destructive nature is rarely acknowledged. In this study, we demonstrated how exposure of the material to a hostile sound wave environment can be limited by the application of another preprocessing step. Single-walled carbon nanotubes (CNTs) were initially ground in a household coffee grinder, which enabled facile deagglomeration thereof. Such a simple approach enabled us to obtain high-quality CNT dispersion at reduced sonication time. Most importantly, electrical conductivity of free-standing films prepared from these dispersion was improved almost fourfold as compared with unground material eventually reaching 1067 ± 34 S/cm. This work presents a new approach as to how electrical properties of nanocarbon ensembles may be enhanced without the application of doping agents, the presence of which is often ephemeral.

References

Sep 16, 2000·Physical Review Letters·S BerberD Tomanek
Jan 16, 2007·Advances in Colloid and Interface Science·Linda VaismanGad Marom
Sep 13, 2016·Science Advances·Gerald J BradyMichael S Arnold
Jun 6, 2017·Nature Communications·Joseph S FriedmanAlan V Sahakian
Dec 20, 2018·Advanced Materials·Chuangang Hu, Liming Dai
Jun 1, 2019·Nature Reviews. Chemistry·Alexandra H BrozenaYuHuang Wang

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Citations

Dec 31, 2020·Materials·Monika Rdest, Dawid Janas
May 1, 2021·Materials·Monika Rdest, Dawid Janas

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Methods Mentioned

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