Research Progress on Prelithiation for Silicon-based Anode in Lithium-ion Battery
Silicon-based materials,with high specific capacity,high security and environmental friendliness,it is consid-ered as a potential new anode material.Irreversible silicate will be generated in the first charging and discharging process of silicon materials,which will lead to the decrease of the first coulombic efficiency,and the loss of active lithium due to vol-ume expansion and serious side reaction of electrolyte during the cycle,which seriously hinders the industrialization pro-cess of silicon anode.Pre-lithiation can compensate the loss of initial active lithium to improve the first effect and then im-prove the energy density of the battery.This review summarizes the research progress of pre-lithiation methods for silicon-based negative electrodes in recent years,summarizes the advantages and disadvantages of various pre-lithiation technolo-gies,and looks forward to their application prospects.
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