Recent advances in graphene based materials as anode materials in sodium-ion batteries

摘要

cqvip:Sodium-ion batteries(SIBs)have emerged as a promising alternative to Lithium-ion batteries(LIBs)for energy storage applications,due to abundant sodium resources,low cost,and similar electrochemical performance.However,the large radius of Na+and high molar mass compared to Li^+,result in large volume strain during charge/discharge and low reversible capacity and poor cycling stability.Due to exceptional physical and chemical properties,graphene has attracted increasing attention as a potential anode material for SIBs.When integrated with other nanomaterials in electrodes,graphene can improve the electrical conductivity,accommodate the large volume change and enhance reaction kinetics.This paper provides a systematic review of recent progress in the application of graphene based anodes for SIBs,with a focus on preparation,structural configuration,Na+storage mechanism and electrochemical performance.Additionally,some challenges and future perspectives are provided to improve the sodium storage performance of graphene based electrodes.