An amorphous niobium pentoxide–carbon composite as a structurally stable high performance anode material for sodium-ion batteries

Abstract

Sodium-ion batteries have shown the advantages of abundant reserves and low environmental impact. Niobium pentoxide has drawn significant interest as an anode material for sodium-ion storage due to its high reversible capacity. In this research, amorphous Nb₂O₅ encapsulated in a carbon matrix was studied as an anode material for Na-ion batteries. It exhibits excellent electrochemical performance with high specific capacity and cycle stability, attributed to its excellent pseudocapacitive characteristics.