Preparation of SiO2/rGO/CNTs composite and application for lithium-ion- battery anodes

To mitigate the volume expansion of SiO2 during the processes of charging and discharging, SiO2/rGO/CNTs composite was fabricated as lithium-ion-battery anode. Within this composite, CNTs are dispersed on the flexible rGO, serving as the supporting framework and conductive bridge of SiO2/rGO. This unique arrangement effectively mitigates the volume expansion of SiO2 as well as concurrently enhances its conductivity, resulting in significant improvement of electrochemical performances. As a result, the SiO2/rGO/CNTs anode exhibits an initial discharge capacity of 1521 mA h g-1, with a sustained capacity of 612 mA h g-1 after 200 cycles at 1 A g-1.

Automated summary

SiO2/rGO/CNTs composite was fabricated to mitigate the volume expansion of SiO2 during charging and discharging processes, resulting in significant improvement of electrochemical performances.