Synthesis of Novel Li-rich [Li[Li(1−x)/3Mn(x+2)/3]O2; 0 ≤ x ≤ 0.5] nanocomposite. Spherical morphology with slight agglomeration observed for the composition. Electronic conductivity increases to the 102-103 orders for LMO3 composition. LMO3 delivers best rate and cycling performances at all C-rate.