Resolving the relationship between capacity/voltage decay and the phase transition by accelerating the layered to spinel transition.

ABSTRACT: Lithium-rich cathode materials are some of the most promising choices for lithium-ion batteries due to their excellent energy density (>900 W h kg^-1). However, severe voltage/capacity degradation during cycling has seriously hindered the further commercialization of lithium-rich cathode materials. Current research efforts are focused on enhancing their voltage and capacity retention. Here, the coating of FeF₃ on specific crystal planes is utilized to achieve a degradation trend that is very different from that of the as-received material. Using this as an entry point, the relationship between voltage and capacity degradation was studied in depth. The oriented coated material undergoes a more drastic phase transition during cycling, yet its voltage decay remains basica

SUBMITTER: Pang Q 

PROVIDER: S-EPMC11792628 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature