Suppressing Manganese Dissolution via Exposing Stable {111} Facets for High-Performance Lithium-Ion Oxide Cathode.

ABSTRACT: Spinel-type LiMn₂O₄ cathode materials commonly suffer from manganese dissolution due to the severe interfacial side reactions especially at elevated temperature. Here, a 3D hollow fusiform LiMn₂O₄ cathode material is reported with preferentially exposed stable {111} facets and seamless outer structure, which is clearly confirmed by microfocused ion beam scanning electron microscopy, high-resolution transmission electron microscopy as well as scanning transmission electron microscopy with atomic resolution. Owing to the optimal geometrical structure design and the preferentially exposed stable {111} facets, the electrode delivers excellent rate capability (107.6 mAh g^-1 at 10 C), remarkable cycling stability (83.3% capacity retention af

SUBMITTER: Xiao Y 

PROVIDER: S-EPMC6662411 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature