Inhibiting inter-layer gliding in transition metal layered oxides through interphase engineering for sodium-ion batteries.

ABSTRACT: Inter-layer gliding induced phase transitions are widely recognized as the predominant cause of performance degradation in layered oxide positive electrode materials utilized in Na/Li-ion batteries. However, effectively restraining these phase transitions at a fundamental level poses a significant challenge. In this study, we elucidate that gliding at the X2/Y3 (X, Y = P or O) interphase layer can be thermodynamically inhibited through an energetically driven gliding-inhibition mechanism, by systematic structural analysis and correlated energy calculations. Building upon this insight, we propose interphase engineering as an effective approach to mitigate phase transitions. The resulting P2/P3-Na_0.46Mn_0.9Ni_0.1O₂ material, featuring dense and unifo

SUBMITTER: Zhou X 

PROVIDER: S-EPMC12279993 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature