Metallic NbS One-Dimensional van der Waals Heterostructures.

This study presents the experimental demonstration of metallic NbS-based one-dimensional van der Waals heterostructures using a modified NaCl-assisted chemical vapor deposition strategy. By employing a ″remote salt″ strategy, we realized precise control of the NaCl supply, enabling the growth of high-quality coaxial NbS nanotubes on single-walled carbon nanotube-boron nitride nanotube (SWCNT-BNNT) templates. Using this remote salt strategy, the morphologies of as-synthesized NbS could be tuned from 1D nanotubes to suspended 2D flakes.

Yttrium-Sodium Halides as Promising Solid-State Electrolytes with High Ionic Conductivity and Stability for Na-Ion Batteries.

All-solid-state sodium-ion batteries (ASIBs) are promising candidates for large-scale energy storage applications. To build such a battery system, efficient solid-state electrolytes (SSEs) with high sodium ionic conductivity at room temperature and good electrochemical stability as well as interface compatibility are required. In this work, using density functional theory combined with molecular dynamics simulation and a phase diagram, we have studied the potential of yttrium halide-based materials (NaYX, where X = Cl or Br) with inherent cation vacancies as diffusion carriers for solid electrolytes in ASIBs.