Enhanced electrochemical performance of lanthanum ferrite decorated reduced graphene oxide nanocomposite electrodes prepared by in situ microwave irradiation for energy storage applications

Summary Lanthanum ferrite decorated reduced graphene oxide (LaFeO3/rGO) nanocomposite is prepared by in‐situ microwave irradiation method. The X‐ray diffraction study reveals the single phase orthorhombic structure of LaFeO 3 nanoparticles and LaFeO 3 /rGO nanocomposites. The FTIR study reveals various vibrational modes and the characteristic D and G bands of the Raman spectrum confirms the formation of reduced graphene oxide. The SEM and HR‐TEM images demonstrate that spherical LaFeO 3 particles are decorated on 2D graphene sheets. From the HR‐TEM study, the average particle size of LaFeO 3 is estimated to be 23 nm. The synergistic effect of 3D LaFeO 3 nanoparticles and 2D graphene layers offers more active sites to achieve the enhanced electrochemical performance. The specific capacitance of LaFeO 3 /rGO composites is measured to be 170 Fg −1 at 10 mV s −1 . The composite electrode has admirable cyclic stability, better Columbic efficiency and improved capacitance retention with great potential for supercapacitor applications.