Hydrothermal-assisted synthesis of a porous polyaniline/reduced graphene oxide composite as a high-performance electrode material for supercapacitors. (15th February 2019)

• Record Type: Journal Article
• Authors: Moyseowicz, Adam; Gryglewicz, Grażyna
• Is Part Of: Composites. Number 159(2019)
• Page Start: 4
• Page End: 12
• Publication Date: 2019-02-15
• Subjects: Nano-structures -- Polymer-matrix composites (PMC) -- 3-Dimensional reinforcement -- Supercapacitor -- Hydrothermal treatment; Composite materials -- Periodicals; Materials science -- Periodicals; Composite materials; Periodicals; Electronic journals; 620.118
• DOI: 10.1016/j.compositesb.2018.09.069
• Languages: English
• ISSNs: 1359-8368

Abstract

Abstract: We report a facile, two-step synthesis process for a porous polyaniline/reduced graphene oxide composite (PANI/rGO-HT) that involves the oxidative polymerization of aniline, followed by the hydrothermal treatment of polyaniline (PANI) and graphene oxide. The reduction of graphene oxide under hydrothermal conditions in the presence of PANI nanoparticles yields a three-dimensional porous composite with a specific surface area of 228 m 2 g −1, which delivers high specific capacitances from 420 to 239 F g −1 at current densities of 0.2–20 A g −1 . PANI/rGO-HT exhibits remarkable electrochemical stability due to the rGO, achieving a capacitance retention of 80% after 6000 cycles at a high current density of 2 A g −1, which unveils its promising potential for supercapacitor applications. Graphical abstract: Highlights: The hydrothermal treatment of GO and PANI yields a 3D porous binary composite. The PANI/rGO-HT composite exhibits a high specific surface area of 228 m 2 g −1 . The composite combines the electrochemical performance of PANI and graphene. PANI/rGO-HT exhibits an outstanding specific capacitance of 420 F g −1 at 0.2 A g −1 . Symmetric device based on the composite delivers maximum energy of 9.3 Wh kg −1 .