P2-type Na_0.6Ni_0.2Co_0.2Mn_0.5Ti_0.1O₂ powders are successfully synthesized by a solid state reaction. Ex situ XRD reveals the phase transition process from P2 to O2 occurs at 4.1 V. As they are cycled in a narrow voltage window (4.2–2 V), they exhibit excellent cycling stability and high rate capability. Even at 5C for 250 cycles, the reversible capacity could be kept at 66.0 mA h g⁻¹.