One-step chemically controlled wet synthesis of graphene nanoribbons from graphene oxide for high performance supercapacitor applications

摘要: The present manuscript for the first time reports a novel one-step wet chemical approach to synthesize about 150–300 nm wide graphene nanoribbons (GNRs) by reduction of oxide (GO) using malonic acid as reducing agent. Optical, X-ray diffraction, high resolution transmission electron microscopy, Raman, infrared, photoelectron spectroscopy and 13C nuclear magnetic resonance (NMR) demonstrated effective GO. average thickness GNRs has been estimated atomic force microscopy at 3.3 ± 0.2 nm, which is reduced significantly 1.1 0.5 upon annealing 300 °C (GNRs-300). In process nucleation growth, intermediate(s), formed between GO undergo twisting/folding involving supramolecular interactions yield ∼0.15 1 mm long curled GNRs. NMR demonstrates significant increase in sp2 character following order < GNRs-300, also evidenced conductivity measurements. exhibited specific capacitance value 301 F g−1 A with good cyclic stability 4000 charge–discharge cycles 15 g−1, energy density/power density (16.84 W h kg−1/5944 kg−1) an aqueous electrolyte demonstrating their tremendous potential electrode material storage applications.