3D organic Na4C6O6/graphene architecture for fast sodium storage with ultralong cycle life

Abstract

Sodium-ion batteries (SIBs) have aroused increasing interest as one of the most promising replacements for lithium-ion batteries (LIBs). Here, a novel organic–inorganic 3D Na₄C₆O₆–graphene architecture was successfully fabricated from commercial Na₂C₆O₆ and for the first time applied for sodium storage. Hence, the 3D Na₄C₆O₆–graphene architecture exhibits a high reversible capacity, good cyclic performance and high-rate capability for sodium storage.