Recent progress on strategies to improve the high-voltage stability of layered-oxide cathode materials for sodium-ion batteries

Abstract Sodium-ion batteries offer a low-cost sustainable alternative to current lithium-ion and can be made on the same manufacturing lines. The sustainability arises from low cost, reduction in use of critical elements strategic materials, potential long-life. To maximize their potential, higher energy density are required, this achieved part through stabilization voltage cathode materials. In review we summarize failure degradation processes associated with high capacity layered oxide Material crystal structure rearrangements, electrolyte oxidation, particle cracking reactive surfaces form most mechanisms. Strategies overcome these discussed detail, synergistic requirements stabilize materials interfaces highlighted. importance surface engineering future design is emphasized.