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Issue 19, 2018
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A densely packed Sb2O3 nanosheet–graphene aerogel toward advanced sodium-ion batteries

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Abstract

As a promising anodic material for rechargeable batteries, Sb2O3 has drawn increasing attention due to its high theoretical capacity and abundant natural deposits. However, poor cyclability and rate performance of Sb2O3 derived from a large volume change during insertion/desertion reactions as well as a sluggish kinetic process restrict its practical application. Herein, we report a facile amorphous-to-crystalline strategy to synthesize a densely packed Sb2O3 nanosheet–graphene aerogel as a novel anode for sodium ion batteries (SIBs). This Sb2O3/graphene composite displays a reversible capacity as high as 657.9 mA h g−1 even after 100 cycles at 0.1 A g−1, along with an excellent rate capacity of 356.8 mA h g−1 at 5.0 A g−1. The superior electrochemical performance is attributed to the synergistic effects of densely packed Sb2O3 nanosheets and graphene aerogel, which serves as both a robust support and stable buffer layer to maintain the structural stability of the nanocomposite, and enhances the electrode kinetics of electrolyte diffusion and electron transfer simultaneously. Hence, this densely-packed two-dimensional Sb2O3 nanosheet–graphene aerogel can be a promising anode material for rechargeable SIBs due to its facile synthesis process and outstanding electrochemical performance.

Graphical abstract: A densely packed Sb2O3 nanosheet–graphene aerogel toward advanced sodium-ion batteries

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Publication details

The article was received on 13 Mar 2018, accepted on 09 Apr 2018 and first published on 10 Apr 2018


Article type: Paper
DOI: 10.1039/C8NR02102C
Citation: Nanoscale, 2018,10, 9108-9114
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    A densely packed Sb2O3 nanosheet–graphene aerogel toward advanced sodium-ion batteries

    J. Zhou, B. Yan, J. Yang, Y. Yang, W. Zhou, H. Lan, H. Wang and L. Guo, Nanoscale, 2018, 10, 9108
    DOI: 10.1039/C8NR02102C

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