Cobalt ferrite (CoFe<inf>2</inf>O<inf>4</inf>) magnetic nanoparticles (MNPs) are prepared by chemical oxidation method with optimized experimental parameters and carbon modified by simple pyrolysis process with the help of sucrose sugar solutions. The phase and morphology analysis from XRD, FESEM and TEM revealing that the post annealing for the carbon formation is not affecting crystalline phase. The attachment of carbon on CoFe<inf>2</inf>O<inf>4</inf> MNPs for the nanocomposite formation is confirmed from the FESEM and TEM micrographs. The saturation magnetization of bare CoFe<inf>2</inf>O<inf>4</inf> MNPs is observed as 77 and it decreases to 65 emu/g for the carbon composite. The highest specific capacitance of 318 F/g is achieved for the nanocomposites formed at 400 °C. The electrochemical and magnetic characteristics of the carbon nanocomposites reveals that it could be used as a better candidate in the area of negative electrode materials for the magnetic field assisted electrochemical supercapacitor applications. © 2024 Elsevier B.V., All rights reserved.