▎ 摘　　要

Herein, we report the synthesis and electrochemical performance of a composite of antimony oxide (Sb2O3) microstructures encapsulated in graphene aerogel, interconnected by a network of carbon nanotubes (Sb2O3-CNT-graphene aerogel), as efficient anode material for sodium and lithium ion batteries. The Sb2O3 microstructures, with unique star-shaped morphology, are synthesized through a facile hydrothermal method. The composite electrode with 3-dimensional network of graphene, homogeneously 'wired' with carbon nanotubes, exhibit excellent electrochemical properties as anode for sodium-ion batteries and deliver stable specific capacity of 360 mAh g(-1) at a current density of 100 mA g(-1) over 100 cycles vs. Na/Na+. We study the reaction kinetics upon (de)sodiation and further attempt to probe the underlying electrochemical charge storage mechanism using ex-situ techniques such as powder X-ray diffraction and X-ray Photoelectron spectroscopy (XPS). (C) 2020 Published by Elsevier B.V.