Keywords: Li-ion batteries, intercalation cathodes, disordered rock salt, Li 2 VO 2 F Advanced cathode materials with superior energy storage capability are highly demanded for mobile and stationary applications. The inherent structural feature of Li + hosts is critical for the battery performance. High-capacity conversion cathode materials often encounter large voltage hysteresis (low energy efficiency) accompanied with the structural reconstruction.[1]The current commercial cathode materials are still dominated by intercalation materials with intrinsic structural integrity for accommodating Li + .[2] However, the known intercalation materials have limited theoretical capacity (< 300 mAh g -1 ). [3] In addition, structural transition/degradation have often been observed for the common intercalation hosts with ordered Li + / transition metal (TM) lattice sites. Antisite disorder (Li + sites/layers occupied by TM ions) in olivines can block the one-dimensional Li + diffusion path.[4] The activation barrier for Li + diffusion in layered oxides is sensitive to the Li-content, the spacing of the