Influence of Crystal Disorder in MoS2 Cathodes for Secondary Hybrid Mg-Li Batteries

The full extent to which the electrochemical properties of MoS2 electrodes are influenced by their morphological characteristics, such as crystalline disorder, remains unclear. Here, we report that disorder introduced by ball-milling decreases the Faradaic component of cell capacity and leads to increasingly pseudo-capacitive behaviour. After high temperature annealing, a more battery-like character of the cell is restored, consistent with a decrease in disorder. These findings aid the optimisation of MoS2 electrodes, which show promise in several battery technologies.