Single-Walled Carbon Nanotube-in-Binary-Polymer Nanofiber Structures and Their Use as Carbon Precursors for Electrochemical Applications
| Autor: | Thanh-Hai Le, Kap Seung Yang, Saerona Kim, Hyeonseok Yoon, Yukyung Kim, Geunsu Park |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
chemistry.chemical_element 02 engineering and technology Carbon nanotube 010402 general chemistry 01 natural sciences Polyvinyl alcohol law.invention Crystallinity chemistry.chemical_compound law Physical and Theoretical Chemistry chemistry.chemical_classification Polyacrylonitrile Polymer 021001 nanoscience & nanotechnology Electrospinning 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials General Energy chemistry Chemical engineering Nanofiber 0210 nano-technology Carbon |
| Zdroj: | The Journal of Physical Chemistry C. 122:4189-4198 |
| ISSN: | 1932-7455 1932-7447 |
| Popis: | Hierarchical structuring of materials in the nanometer regime provides opportunities to achieve extraordinary characteristics of the resulting products. Here, we report unique one-dimensional hierarchical nanostructures consisting of single-walled carbon nanotubes (SWNTs), polyvinyl alcohol (PVA), and polyacrylonitrile (PAN). First, SWNT-in-binary-polymer nanofiber (SbPNF) structures were obtained through the incorporation of PVA-wrapped SWNTs into PAN, followed by the electrospinning of the SWNT/PVA/PAN solution. Importantly, the SbPNFs exhibited an aligned SWNT-in-nanofiber structure and enhanced ordering of the polymer chains. The SbPNFs were successfully converted to carbonized products [SWNT-in-carbon nanofibers (SbCNFs)] with enhanced crystallinity and tunable electrochemical properties. Compared to those of the control samples (no SWNT), the charge-transfer resistance and the surface area of the SbCNFs were two orders of magnitude lower and 11–20% higher, respectively, which resulted in better elec... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|