Ni coated multi-walled carbon nanotubes are widely used in various advanced applications due to their unique properties. In electronics, they serve as conductive fillers in nanocomposites, enhancing electrical conductivity and mechanical strength. They are also utilized in energy storage devices like supercapacitors and batteries, where they improve electrode performance and charge-discharge efficiency. In catalysis, the nickel coating provides active sites for chemical reactions, making them effective in hydrogenation and fuel cell applications. Additionally, they are employed in sensors for detecting gases and biomolecules, leveraging their high surface area and sensitivity. Their use in electromagnetic shielding is another significant application, as they effectively absorb and dissipate electromagnetic interference. In biomedical fields, they are explored for drug delivery systems and as components in diagnostic devices, due to their biocompatibility and ability to bind with biomolecules.