Research progress in preparation of biomass-based hard carbon anode materials for sodium-ion battery
Sodium-ion battery has attracted much attention as a low-cost and sustainable energy storage technology.As an important component in sodium-ion battery,hard carbon anode materials have a key impact on battery performance,biomass-based hard carbon has received extensive attention due to its wide availability of raw materials and low cost.The research progress in biomass hard carbon as an anode material for sodium-ion battery is reviewed.The effects of the preparation methods,such as direct carbonization method,activation method,hydrothermal method and templated method,on carbon structure and electrochemical performance of hard carbon are discussed,the advantages and disadvantages are analyzed.The application of biomass-based hard carbon anode materials in sodium-ion battery is prospected.