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

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 similar to 200 mAh g(-1) at 2 A g(-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. (C) 2020 Published by Elsevier B.V. on behalf of Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences