Preparation of polyaniline@graphene nanocomposite with oxidative polymerization of pre-assembled of aniline for supercapacitor electrodes

• Published in: Journal of polymer research 2023-11, Vol.30 (11), Article 417
• Main Authors: Zhu, Aiping, Zhang, Jiawen, Situ, Boyi, Ma, Yushun, Ji, Zhibin, Peng, Zhengkang, Yan, Zihan, Tu, Yusong
• Format: Article
• Language: English
• Subjects: Aniline; Capacitors; Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Current density; Electron microscopy; Graphene; Graphite; Industrial Chemistry/Chemical Engineering; Microscopy; Nanocomposites; Original Paper; Photoelectrons; Polyanilines; Polymer Sciences; Polymerization; Supercapacitors; X ray photoelectron spectroscopy; X-ray spectroscopy
• ISSN: 1022-9760; 1572-8935
• DOI: 10.1007/s10965-023-03794-4

In this study, we report a facile strategy to prepare polyaniline and graphene nanopieces (PANI@GNP) nanocomposite by the oxidative polymerization of the aniline pre-assembled on the GNP surface. The morphology, chemical structure and interfacial interaction of the synthesized samples were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman and x-ray photoelectron spectroscopy (XPS). The resulting PANI@GNP nanocomposite with a 0.33:1 mass ratio of PANI to GNP, has a large specific surface area, electron doping interface, excellent conductivity and reversible redox activity. The PANI@GNP symmetrical supercapacitor with the unique π-π electronic interaction demonstrates 351.7 F/g of specific capacitance; 57.5% of the rate property when the the current density increases from 1 to 10 A/g; the capacity retained 80% of the initial value in constant current charge–discharge mode (at the current density of 10 A/g) after 2000 cycles. This scalable preparation process makes PANI@GNP nanocomposite promising application in electrochemical devices.