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

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.

SUBMITTER: Kumanek B

PROVIDER: S-EPMC6722516 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature

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

Kumanek Bogumiła B Wasiak Tomasz T Stando Grzegorz G Stando Paweł P Łukowiec Dariusz D Janas Dawid D

Nanomaterials (Basel, Switzerland) 20190802 8

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 ...[more]

PMID: 31382498

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