Enhanced lithium storage via Fe doping in V2O3/N-doped carbon hybrids: a stable insertion–extraction anode

Abstract

Fe-doped V₂O₃ nanoparticles hybridized with N-doped carbon were successfully constructed. The Fe–V₂O₃/NC anode presents exceptional rate performance in LIBs, achieving a large capacity of 361 mAh g⁻¹ under 5 A g⁻¹. In situ XRD analysis and theoretical calculations collectively elucidated, for the first time, that the Li⁺ storage mechanism follows an insertion and extraction pathway rather than a conversion reaction.