To meet the continuous increase in global energy demand while imposing restrictions on greenhouse gas levels typically generated by fossil fuels, requires alternative energy storage technologies. It has been realised that Li-ion batteries (LiBs) have the potential to bridge this gap and reach energy sustainability. LiBs are considered the most promising power source for the next generation of electric vehicles (EVs) and the advancements achieved over the past decade in LiB technology, in terms of both battery materials chemistry and system management/engineering, have resulted in more affordable EV batteries with increased mileage per charge . The energy density of EV batteries is primarily governed by the capacity of the cathode material; currently the cathode used in commercial batteries is based on layered LiMO2type materials (where M = Co, Ni, Mn and Al) with theoretical capacities in the order of 200 -250 mAh•g -1 . Growing ethical concerns related to the conditions at Co mining facilities coupled with its limited availability have led to the development of layered cathode materials with significantly reduced amount of Co; Ni-rich cathode materials containing 80 % of nickel, LiNi0.8Co0.15Al0.05O2 (NCA) and LiNi0.8Co0.1Mn0.1O2 (NMC811) have been recently successfully commercialised as cathode materials for the EV batteries. The substitution of toxic and expensive Co with Ni however comes at a price; Ni rich layered materials have reduced stability and exhibit a decrease in capacity over prolonged cycling, especially when operating at high temperatures and voltages (i.e. above ~ 4.2 V). Various mechanisms have been identified as responsible for the degradation in these materials, including both reactions and phase transformations occurring at the surface and within the bulk, leading to dissolution and cracking of active materials and formation of phases that suppress the Li movement within the electrode .