Flexible supercapacitors (FS) are ideal as power backups for upcoming stretchable electronics due to their high power density and good mechanical compliance. However, lacking technology for FS mass manufacturing is still a significant obstacle. The present study describes a novel method for preparing FS based on reduced graphene oxide (RGO) using the N+ plasma technique, in which N+ reduces graphene oxide on the surface of a cotton/polyester substrate. The effect of aloe vera (AV) as a natural reducing & capping agent and carbon nanotubes (CNT) as nanoconductors on the electrochemical performance of the electrodes is studied. FESEM and XPS were employed to investigate the electrodes' structural and chemical composition of electrodes. The galvanostatic charge–discharge curves of electrodes revealed the enhancement of the electrochemical activity of the as-prepared electrode upon additions of AV and CNT. The areal capacitance of the RGO, RGO/AV, and RGO/ AV/CNT supercapacitors at 5 mV/s was 511, 1244.5, and 1879 mF/cm2, respectively. The RGO electrode showed capacitive retention of 80.9% after 2000 cycles enhanced to 89.7% and 92% for RGO/AV and RGO/AV/CNT electrodes, respectively. The equivalent series resistance of the RGO electrode was 126.28 Ω, decreased to 56.62 and 40.06 Ω for RGO/AV and RGO/ AV/CNT electrodes, respectively.

Nitrogen plasma synthesis of flexible supercapacitors based on reduced graphene oxidealoe veracarbon nanotubes nanocomposite
    Abstract
    1 Introduction
    2 Materials and methods
        2.1 Materials
        2.2 Graphene oxide synthesis
        2.3 Synthesis of different reduced graphene oxide aloe vera carbon nanotube electrodes
        2.4 Characterization techniques
    3 Results and discussion
    4 Conclusion
    Acknowledgements 
    References

• M. M. Atta(Radiation Physics Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority, Cairo, Egypt)
• Hesham M. H. Zakaly(Faculty of Engineering and Natural Sciences, Computer Engineering Department, Istinye University, Istanbul 34396, Turkey, Institute of Physics and Technology, Ural Federal University, Yekaterinburg 620002, Russia)
• N. Almousa(Department of Physics, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia)
• A. M. Abdel Reheem(Radiation Physics Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority, Cairo, Egypt)
• M. Madani(Colleges of Science and Humanities‑Jubail, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia)
• Usama.F. Kandil(Petroleum Applications Department, Egyptian Petroleum Research Institute (EPRI), Cairo, Egypt)
• A. M. A. Henaish(Physics Department, Faculty of Science, Tanta University, Tanta 31527, Egypt, NANOTECH Center, Ural Federal University, Ekaterinburg 620002, Russia)
• Eman O. Taha(Petroleum Applications Department, Egyptian Petroleum Research Institute (EPRI), Cairo, Egypt)