Nanofiber networks of Na3V2(PO4)3 as a cathode material for high performance all-solid-state sodium-ion batteries

Abstract

Herein, we fabricated a novel all-solid-state sodium-ion battery (SIB) using Na₃V₂(PO₄)₃ with a nanofiber network structure as the cathode material and a PEO solid polymer electrolyte (SPE) membrane, demonstrating a high reversible capacity and good cycling stability at high rates. Our study shows that the nanofiber morphology of cathode materials has significantly improved the battery's performance, especially with a high loading of cathode materials. Therefore, a promising route to improve all-solid-state batteries' rate performance is proposed.