Electrospinning Preparation of Nanosilicon/Disordered Carbon Composite as Anode Materials in Li-Ion Battery

摘要

Electrospinning is employed to prepare Si/C composite anode materials. By electrospinning of Si-poly(vinyl alcohol) and by subsequent pyrolysis under argon flow, the nanosilicon particles coated by disordered carbon are uniformly and tightly embedded in the irregular porous network of a disordered carbon matrix, which leads to the gradual release of large capacity from the pure Si component in the composite anode. After 50 cycles, the reversible discharge capacity of the Si/C composite can reach as high as 892.5 mAh/g.