Supercapacitors are considered as potential innovation for energy storage owing to their long charge–discharge life and high power density. Herein, a simple and industry-scalable approach was developed to prepare the hybrid of Fe3O4-doped porous carbon nanorods (Fe3O4-DCN) supported by three-dimensional (3D) kenaf stem-derived macroporous carbon (KSPC) for high-performance supercapacitor, which was prepared via pyrolyzing the iron fumarate metal organic frameworks (MIL-88A, MIL stands for Materials from Institut Lavoisier)/3D-KSPC. The resulted 3D-KSPC/Fe3O4-DCN nanocomposites were carefully characterized by various techniques including scanning electron microscopy, transmission electron microscopy, thermogravimetric analysis, Fourier transform infrared spectroscopy, X-ray powder diffraction and N2 adsorption/desorption isotherms. The 3D-KSPC/Fe3O4-DCN were employed as a promising electrode materials of supercapacitors by combining the advantage of Fe3O4-DCN (e.g., high specific capacitance, good rate cap...