Design and fabrication of macroporous polyaniline nanorods@graphene-like MoS2 nanocomposite with high electrochemical performance for supercapacitors

A novel macroporous polyaniline nanorods (MPN)@graphene-like MoS2 (MoS2) nanocomposite has been successfully prepared by combining the simple template method with hydrothermal reaction. The compositions of the nanocomposite is systematically characterized by Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) techniques. The morphologies and microstructures of samples are examined by field-emission scanning electron microscopy (FESEM). The capacitive performance are investigated by cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD). The nanocomposite exhibits a high specific capacitance of 602.9 F g−1 at a current density of 0.5 A g−1 and excellent rate capability (retains 71.9% even at a current density of 10 A g−1). Moreover, the material also has a high energy density of 43.3 Wh kg−1 at a power density of 6000 W kg−1 and superior cycling stability that can maintain 86.7% of its initial capacitance after 2000 cycles at the current density of 10 A g−1. The good electrochemical properties rendering MPN@MoS2 to be a promising electrode material for supercapacitors.