中文摘要：

锂离子电池是现阶段新能源汽车和储能技术的核心,而开发高能量密度的正负极电池材料是发展下一代高性能锂离子电池的关键.在所有硅基负极材料中,硅碳复合材料被认为最具发展前景,但其循环寿命仍有待提高,特别是高容量的硅碳复合材料.硅基负极材料具有非常高的理论比容量,但在实际应用过程中容量衰减较快,这严重影响了其大规模商业化推广.对此,从硅基负极材料的机理、商业化应用需要解决的主要难题以及其电化学性能的改善方法等几方面介绍其研究进展,并对其未来的发展趋势进行展望.

英文摘要：

Lithium ion battery is the core of new energy vehicles and energy storage technologies and development of high en-ergy density electrode materials is crucial to develop next-generation high-performance lithium ion battery. Silicon-carbon composite is considered to be the most promising one among all silicon-based anode materials, but its cycle life is still to be improved, especially for high capacity composites. Silicon-based anode material has very high theoretical specific capacity, but in actual application its capacity decays rapidly, which seriously affects the large-scale commercialization. Therefore, this paper introduces the research progress of silicon-based anode materials from aspects of its mechanism, major problems in commercialization, improving methods for its electrochemical performance, and so on. It also looks forward future develo-ping trend of silicon-based anode materials.