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Metallic Sb nanoparticles embedded into a yolk–shell Sb2O3@TiO2 composite as anode materials for lithium ion batteries

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Metallic antimony is considered to be a promising anode material for lithium ion batteries (LIBs) due to its appropriate reaction potential. However, the rapid loss of capacity during the cycling… Click to show full abstract

Metallic antimony is considered to be a promising anode material for lithium ion batteries (LIBs) due to its appropriate reaction potential. However, the rapid loss of capacity during the cycling process restricts its practical application. Hence, it is essential to research for a facile and effective approach for a new high-capacity antimony trioxide as an anode material for LIBs. In this study, we successfully synthesized an Sb2O3/Sb@TiO2 composite, wherein the TiO2 film was coated on the surface of Sb2O3 nanorods with the discontinuous distribution of elemental Sb particles in the TiO2 film. The Sb2O3/Sb@TiO2 composite exhibits superior rate and cycling performance. As an anode material, a specific discharge capacity of 609 mA h g−1 can be released at a current density of 100 mA g−1. The excellent electrochemical performance is based on Sb nanoparticles and one-dimensional Sb2O3 as the core to enhance the capacity, and TiO2 is used as the outer shell to consolidate the interface between the electrolyte and the electrode material.

Keywords: capacity; sb2o3 tio2; ion batteries; tio2 composite; lithium ion

Journal Title: New Journal of Chemistry
Year Published: 2020

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