Details
| Original language | English |
|---|---|
| Pages (from-to) | 11446-11456 |
| Number of pages | 11 |
| Journal | Journal of materials science |
| Volume | 60 |
| Issue number | 27 |
| Early online date | 16 Jun 2025 |
| Publication status | Published - Jul 2025 |
Abstract
Graphene-based materials are currently in the focus of research, but toward any application a simple and reliable fabrication process is mandatory. To date, graphene nanofibers (GNF) made via electrospinning have been established, using graphene oxide (GO) as templating agent. However, relying on GO as a solid insoluble precursor makes the process harder. We present a method to produce in situ neat GNFs made of solely electrospun polyacrylonitrile (PAN). Besides heating in an oven up to 1700 ∘C, the GNFs were heated by self-resistive heating. For this the nanofibers were placed into an electrical circuit and a rising electrical power was applied reaching over 3200 ∘C directly in the nanofibers. The Raman, XPS, and XRD results show high crystalline GNFs, with little to no defects and high graphitization degree. Furthermore, the electrical transport measurements revealed an eightfold increase in the conductivity. The deeper analysis of the 2D-band indicates the graphene structure. This simple way of electrospun GNFs with a commonly used polymer precursor opens the door to easier access and broader functional application of said nanofibers.
ASJC Scopus subject areas
- Materials Science(all)
- Ceramics and Composites
- Materials Science(all)
- Materials Science (miscellaneous)
- Materials Science(all)
- General Materials Science
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
- Materials Science(all)
- Polymers and Plastics
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In: Journal of materials science, Vol. 60, No. 27, 07.2025, p. 11446-11456.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - In situ formation of electrospun graphene nanofibers
AU - Brehme, Jules
AU - Gruschwitz, Markus
AU - Tegenkamp, Christoph
AU - Renz, Franz
AU - Sindelar, Ralf Franz
N1 - Publisher Copyright: © The Author(s) 2025.
PY - 2025/7
Y1 - 2025/7
N2 - Graphene-based materials are currently in the focus of research, but toward any application a simple and reliable fabrication process is mandatory. To date, graphene nanofibers (GNF) made via electrospinning have been established, using graphene oxide (GO) as templating agent. However, relying on GO as a solid insoluble precursor makes the process harder. We present a method to produce in situ neat GNFs made of solely electrospun polyacrylonitrile (PAN). Besides heating in an oven up to 1700 ∘C, the GNFs were heated by self-resistive heating. For this the nanofibers were placed into an electrical circuit and a rising electrical power was applied reaching over 3200 ∘C directly in the nanofibers. The Raman, XPS, and XRD results show high crystalline GNFs, with little to no defects and high graphitization degree. Furthermore, the electrical transport measurements revealed an eightfold increase in the conductivity. The deeper analysis of the 2D-band indicates the graphene structure. This simple way of electrospun GNFs with a commonly used polymer precursor opens the door to easier access and broader functional application of said nanofibers.
AB - Graphene-based materials are currently in the focus of research, but toward any application a simple and reliable fabrication process is mandatory. To date, graphene nanofibers (GNF) made via electrospinning have been established, using graphene oxide (GO) as templating agent. However, relying on GO as a solid insoluble precursor makes the process harder. We present a method to produce in situ neat GNFs made of solely electrospun polyacrylonitrile (PAN). Besides heating in an oven up to 1700 ∘C, the GNFs were heated by self-resistive heating. For this the nanofibers were placed into an electrical circuit and a rising electrical power was applied reaching over 3200 ∘C directly in the nanofibers. The Raman, XPS, and XRD results show high crystalline GNFs, with little to no defects and high graphitization degree. Furthermore, the electrical transport measurements revealed an eightfold increase in the conductivity. The deeper analysis of the 2D-band indicates the graphene structure. This simple way of electrospun GNFs with a commonly used polymer precursor opens the door to easier access and broader functional application of said nanofibers.
UR - http://www.scopus.com/inward/record.url?scp=105008437922&partnerID=8YFLogxK
U2 - 10.1007/s10853-025-11084-1
DO - 10.1007/s10853-025-11084-1
M3 - Article
AN - SCOPUS:105008437922
VL - 60
SP - 11446
EP - 11456
JO - Journal of materials science
JF - Journal of materials science
SN - 0022-2461
IS - 27
ER -