Efficient fluidization intensification process to fabricate in-situ dispersed (SiO + G)/CNTs composites for high-performance lithium-ion battery anode applications

Abstract

An efficient fluidization process intensification method was proposed to prepare carbon nanotube (CNT)-enhanced high-performance SiO anodes for lithium-ion batteries. The introduction of graphite particles decreased bonding among SiO particles, inhibiting agglomerate growth and enhancing fluidization. The (SiO+G)/CNTs composites were synthesized by fluidized bed chemical vapor deposition with the CNTs grown in- situ, which ensured uniform dispersion and superior anchoring of the CNTs. The in- situ-grown CNTs and stacked graphite ensured excellent structural stability and conductivity. The synthesized (SiO+G)/CNTs delivered a stable reversible capacity of 466 mAh g−1 after 125 cycles and a capacity of ∼200mAhg−1 at 2Ag−1. The charging results indicated that the 3D network structure comprising CNTs and graphite not only effectively buffered the electrode expansion but also greatly improved mechanical flexibility.