Composite number

Engineering

Lithium (medication)

Materials science

Endocrinology

Silicon

Carbon fibers

Chemical engineering

Physical chemistry

Nanotechnology

Organic chemistry

Composite material

Medicine

Chemistry

Electrode

Anode

Optoelectronics

Electrochemical Energy Reviews

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) films, Si-based anodes possess serious stability problems, greatly hindering practical application. To resolve these issues, the modification 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 field are presented. Graphical Abstract

Silicon/Carbon Composite Anode Materials for Lithium-Ion Batteries