One-Step Synthesis of Three-Dimensional Na₃V₂(PO₄)₃/Carbon Frameworks as Promising Sodium-Ion Battery Cathode.

ABSTRACT: Sodium-ion batteries (SIBs) are essential for large-scale energy storage attributed to the high abundance of sodium. Polyanion Na₃V₂(PO₄)₃ (NVP) is a dominant cathode candidate for SIBs because of its high-voltage and sodium superionic conductor (NASICON) framework. However, the electrochemical performance of NVP is hindered by the inherently poor electronic conductivity, especially for extreme fast charging and long-duration cycling. Herein, we develop a facile one-step in-situ polycondensation method to synthesize the three-dimensional (3D) Na₃V₂(PO₄)₃/holey-carbon frameworks (NVP@C) by using melamine as carbon source. In this architecture, NVP crystals intergrown with the 3D holey-carbon frameworks p

SUBMITTER: Zhao L 

PROVIDER: S-EPMC9920691 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature