Abstract: Silicon (Si) is a representative anode material for next-generation lithium-ion batteries due to properties such as a high theoretical capacity, suitable working voltage, and high natural abundance. However, due to inherently large volume expansions (~400%) during insertion/deinsertion processes as well as poor electrical conductivity and unstable solid electrolyte interfaces (SEI) flms, Si-based anodes possess serious stability problems, greatly hindering practical application. To resolve these issues, the modifcation of Si anodes with carbon (C) is a promising method which has been demonstrated to enhance electrical conductivity and material plasticity. In this review, recent researches into Si/C anodes are grouped into categories based on the structural dimension of Si materials, including nanoparticles, nanowires and nanotubes, nanosheets, and porous Si-based materials, and the structural and electrochemical performance of various Si/C composites based on carbon materials with varying structures will be discussed. In addition, the progress and limitations of the design of existing Si/C composite anodes are summarized, and future research perspectives in this feld are presented.

Full-text：https://link.springer.com/article/10.1007/s41918-018-00028-w

Key words: Si/C composite anodes, Lithium-ion battery, Structural design, Cyclic stability