Defective oxygen inert phase stabilized high-voltage nickel-rich cathode for high-energy lithium-ion batteries.

ABSTRACT: Pushing layered cathode to higher operating voltage can facilitate the realization of high-energy lithium-ion batteries. However, the released oxygen species initiate materials surface upon highly delithiated states will react severely with electrolyte, accelerating the structure deterioration and triggering the thermal degradation. Here we propose an inert phase of La₂Mo₂O₉ with abundant oxygen vacancies (about 41%) by regulating the annealing temperature to engineer the cathode interface beyond conventional modifications. By employing LiNi_0.8Co_0.1Mn_0.1O₂ as a model system and extending to higher voltage-operated LiCoO₂ and Li-rich cathode, we demonstrate that the introduced lanthanum and molybdenum io

SUBMITTER: Dai Z 

PROVIDER: S-EPMC10700321 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature