For NMC cathodes, performance improvement has been seen by coating materials like SiO2, MoO3, and Al2O3 , , . Other coatings like Li3PO4 , PPy and Li3PO4 , FePO4 , and LiAlF4 have been studied. Core-shell structures consisting of a nickel-enriched core (to maximise capacity) and a nickel-deficient surface layer (to address the problems of Ni at the surface) have been used to improve the performance of NMC. This has been used extensively in the case of NMC 811. Doping of NMC has been extensively studied with elements such as magnesium, aluminium, titanium and zirconium. However, it is to be noted that all dopants come with their advantages & drawbacks .