Facile synthesis of V⁴⁺-doped and graphene-decorated V₂O₅/biomass carbon nanocomposite using graphene quantum dots for supercapacitors with wide voltage window and high energy density

Abstract

This study reports a strategy for synthesis of V4+-doped and graphene-decorated V2O2/biomass carbon nanocomposite using graphene quantum dot. The introduction of graphene quantum dots and cotton significantly improves the supercapacitor performance.