The cause of the reduced lithium percolation in disordered rock salt materials relative to the random limit is understood to be a consequence of the short-range ordering preferences of the cations, which are comprised of contributions from bonding preferences and electrostatics . Thus, finding ways to suppress unfavourable short-range ordering is crucial for improving the capacity and overall performance of disordered rock salt cathode materials. Fluorine substitution allows for the manipulation of short-range ordering preferences on the anion framework by introducing bondstrength considerations between the cations and the anions which will compete with the cation-cation interactions to determine the overall short-range order . Transition metals bind more strongly to oxygen, creating locally lithium-fluorine-rich regions and transition-metal-oxygen-rich regions, which alters the short-range ordering. Incorporating enough fluorine can therefore create lithium-rich regions with high numbers of 0-TM sites, and good lithium transport. However, high levels of fluorine incorporation requires energyintensive mechanochemical synthesis and can lead to phase separation .