ABSTRACT
Magnetic nanoparticles (MNPs) have got tremendous attention from the materials scientists’ community for their use in a wide range of applications. MNPs have some interesting properties, like reduced size (below 100 nm), large surface area, surface-to-volume ratio, interesting magnetic behavior, and simple synthetic routes. Therefore, MNPs are promising as efficient electrodes for electrochemical energy storage, especially in supercapacitor applications. The electrochemical performance of an MNPs-based electrode can be altered by an external magnetic field or/and magnetism possessed by the electrode materials. This chapter accounts for the recent research development on MNPs, their functionalized materials for supercapacitor application, and the influence of the external magnetic field on the electrochemical performance. Various synthetic processes are also discussed with their pros and cons. Finally, the chapter highlights the challenges and perspectives of these MNPs as promising energy storage candidates.
