Quaternary Layered Ni-rich cathode material NCMA, with a specific capacity of 230mAh/g and a tapped density of 3.23g/cm³, has low lithium salt residues (LiOH 1845ppm). Suitable for high - density electrodes of 3.2g/cm³, its ultra - high - nickel system of 56.32% balances energy density and cycle life, making it the preferred option for power batteries.