High performance of covalently grafted poly(o-methoxyaniline) nanocomposite in the presence of amine-functionalized graphene oxide sheets (POMA/f-GO) for supercapacitor applications
| Autor: | Naser Arsalani, Seyed Jamaleddin Peighambardoust, Abdolkhaled Mohammadi, Ali Akbar Entezami |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Supercapacitor
Materials science Nanocomposite Graphene Oxide 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrochemistry 01 natural sciences Atomic and Molecular Physics and Optics 0104 chemical sciences Electronic Optical and Magnetic Materials law.invention chemistry.chemical_compound chemistry Chemical engineering Polymerization law Polyaniline Polymer chemistry Electrical and Electronic Engineering Cyclic voltammetry 0210 nano-technology |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 28:5776-5787 |
| ISSN: | 1573-482X 0957-4522 |
| DOI: | 10.1007/s10854-016-6248-9 |
| Popis: | In this study, we have synthesized covalently-grafted poly(o-methoxyaniline) nanocomposites in the presence of amine-functionalization of graphene oxide sheets (POMA/f-GO) via an in situ oxidative polymerization poly(o-methoxyaniline) initiated by those amino groups on graphene. Field emission scanning electron microscopy, Fourier transfer infrared spectroscopy, and X-ray diffraction analyses were conducted to characterize the POMA/f-GO film. The electrochemical performance of the nanocomposite was evaluated by cyclic voltammetry and galvanostatic charge–discharge. The POMA/f-GO nanocomposite showed the highest electrochemical capacitance with a value of 422 F g−1 at 0.5 A g−1 current density and good cycle stability with 4.8% loss of capacitance over 1000 cycles. In comparison with polyaniline/f-GO and poly(o-chloroaniline)/f-GO, the POMA/f-GO nanocomposite demonstrated good cyclic stability. The synthesized nanocomposites showed a unique hierarchical morphology of the POMA array like nanostructures grown on the f-GO sheets, which increased the accessible surface area for the redox reaction and allowed faster ion diffusion for excellent electrochemical performance. This research highlights the importance of introducing amino functional groups of graphene oxide and substitution of aniline which improve the electrochemical properties to achieve highly stable cycling and high capacitance values. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink