中文摘要：

硅负极材料具有很高的理论比容量（4200 mAh/g）,但充放电过程中巨大的体积变化导致其循环性能很差,同时较低的电导率以及与常规电解液的不相客性等因素限制了硅作为负极材料在锂离子电池中的应用。因此,目前大部分研究人员都致力于解决其循环性能差的问题。综述了近年来改善硅基负极材料性能的最新进展,指出了硅基材料作为锂离子电池负极材料的研究前景。

英文摘要：

Silicon anode material has extremely high theoretical capacity （4200 mAh/g）,but it suffers from poor cyclability,which result from the huge volume change during lithium ion insertion/extraction process.Moreover,silicon has lower conductivity and incompatibility with conventional electrolyte.These disadvantages are impediments to practical application of Si as the anode materials for rechargeable Li-ion batteries.Therefore,many research works are carried out to improve its cycle life in recent years.Some research progresses of Si-based composite anode materials are summarized and the prospects are pointed out.