Electrical property of macroscopic graphene composite fibers prepared by chemical vapor deposition
| Autor: | Pengfei Guo, Wenchao Yang, Can Fu, Qishang Wang, Chunlei Wang, Junya Wang, Chongwu Zhang, Gao Yanli, Haibin Sun, Junqi Xu |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Graphene Carbon nanofiber Mechanical Engineering Composite number Bioengineering 02 engineering and technology General Chemistry Chemical vapor deposition 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Electrospinning 0104 chemical sciences law.invention Surface coating Mechanics of Materials law Nanofiber Deposition (phase transition) General Materials Science Electrical and Electronic Engineering Composite material 0210 nano-technology |
| Zdroj: | Nanotechnology. 29(30) |
| ISSN: | 1361-6528 |
| Popis: | Graphene fibers are promising candidates in portable and wearable electronics due to their tiny volume, flexibility and wearability. Here, we successfully synthesized macroscopic graphene composite fibers via a two-step process, i.e. first electrospinning and then chemical vapor deposition (CVD). Briefly, the well-dispersed PAN nanofibers were sprayed onto the copper surface in an electrified thin liquid jet by electrospinning. Subsequently, CVD growth process induced the formation of graphene films using a PAN-solid source of carbon and a copper catalyst. Finally, crumpled and macroscopic graphene composite fibers were obtained from carbon nanofiber/graphene composite webs by self-assembly process in the deionized water. Temperature-dependent conduct behavior reveals that electron transport of the graphene composite fibers belongs to hopping mechanism and the typical electrical conductivity reaches 4.59 × 103 S m-1. These results demonstrated that the graphene composite fibers are promising for the next-generation flexible and wearable electronics. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|