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Issue 24, 2018
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Novel nitrogen-doped reduced graphene oxide-bonded Sb nanoparticles for improved sodium storage performance

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Abstract

As a promising anode material for sodium-ion batteries, Sb has attracted considerable attention due to its high theoretical capacity (660 mA h g−1). However, it exhibits poor cycling stability because of its great volume change during sodium ion uptake and release processes. In order to solve this problem, using the ionic liquid Emim-dca as a nitrogen source, novel nitrogen-doped reduced graphene oxide-bonded Sb nanoparticles (Sb/N-rGO) are produced by ball-milling and subsequent pyrolysis treatment. As an anode material for sodium-ion batteries, Sb/N-rGO shows high capacity, excellent cycling stability, and high rate performance. A high reversible capacity of 304.8 mA h g−1 is achieved even at a current density of 5 A g−1. Even after 500 cycles, there is still 90.7% capacity retention (473.2 mA h g−1) at a current density of 0.1 A g−1. The superior sodium storage performance can be attributed to strong bonding between Sb and pyrrolic nitrogen in nitrogen-doped reduced graphene oxide. The facile synthesis strategy can potentially be applied to other anode materials for sodium-ion batteries.

Graphical abstract: Novel nitrogen-doped reduced graphene oxide-bonded Sb nanoparticles for improved sodium storage performance

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Publication details

The article was received on 30 Mar 2018, accepted on 15 May 2018 and first published on 16 May 2018


Article type: Paper
DOI: 10.1039/C8TA02945H
Citation: J. Mater. Chem. A, 2018,6, 11244-11251
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    Novel nitrogen-doped reduced graphene oxide-bonded Sb nanoparticles for improved sodium storage performance

    Y. Fang, X. Xu, Y. Du, X. Zhu, X. Zhou and J. Bao, J. Mater. Chem. A, 2018, 6, 11244
    DOI: 10.1039/C8TA02945H

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