Highly dispersed metals,metal oxides and their composites on substrates have received considerable interest in catalysis and lithium-ion batteries,because of their superior properties compared with their single-component counterparts.In this review,we introduce the properties of supercritical carbon dioxide（scCO2） expanded ethanol,such as low viscosity,near-zero surface tension and high diffusivity.We discuss the deposition procedure and formation mechanism of carbon-based composites in scCO2-expanded ethanol.This method has been used to fabricate several carbon-based composites,such as metal and metal oxide composites deposited on zero-dimensional colloidal carbon,one-dimensional carbon nanotubes,two-dimensional graphene,and three-dimensional hierarchical porous carbon.These materials and their performance as anodic materials for lithium-ion batteries will also be reviewed.
