Li iontronics in single-crystalline T-Nb₂O₅ thin films with vertical ionic transport channels.

ABSTRACT: The niobium oxide polymorph T-Nb₂O₅ has been extensively investigated in its bulk form especially for applications in fast-charging batteries and electrochemical (pseudo)capacitors. Its crystal structure, which has two-dimensional (2D) layers with very low steric hindrance, allows for fast Li-ion migration. However, since its discovery in 1941, the growth of single-crystalline thin films and its electronic applications have not yet been realized, probably due to its large orthorhombic unit cell along with the existence of many polymorphs. Here we demonstrate the epitaxial growth of single-crystalline T-Nb₂O₅ thin films, critically with the ionic transport channels oriented perpendicular to the film's surface. These vertical 2D channels enable fas

SUBMITTER: Han H 

PROVIDER: S-EPMC10465368 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature