Crystallographic Engineering Enables Fast Low-Temperature Ion Transport of TiNb₂O₇ for Cold-Region Lithium-Ion Batteries.

ABSTRACT: TiNb₂O₇ represents an up-and-coming anode material for fast-charging lithium-ion batteries, but its practicalities are severely impeded by slow transfer rates of ionic and electronic especially at the low-temperature conditions. Herein, we introduce crystallographic engineering to enhance structure stability and promote Li⁺ diffusion kinetics of TiNb₂O₇ (TNO). The density functional theory computation reveals that Ti⁴⁺ is replaced by Sb⁵⁺ and Nb⁵⁺ in crystal lattices, which can reduce the Li⁺ diffusion impediment and improve electronic conductivity. Synchrotron radiation X-ray 3D nano-computed tomography and in situ X-ray diffraction measurement confirm the introduction of Sb/Nb alleviates vo

SUBMITTER: Wei L 

PROVIDER: S-EPMC12756213 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature