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Synthesis of ZnSb@C microflower composites and their enhanced electrochemical performance for lithium-ion and sodium-ion batteries

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Abstract

ZnSb@C microflower composites have been fabricated through C2H2-pyrolysis by the reduction of microflower-like Zn(OH)2–Sb2O3 precursors. The as-formed ZnSb particles are uniformly dispersed in the synchronously formed continuous amorphous carbon matrix. Meanwhile, the flower-like morphology of the precursors has been maintained after the reducing process. As anodes for Li-ion and Na-ion batteries, the as-prepared ZnSb@C microflower composite anode exhibits a reversible capacity of 480.5 mA h g−1 at 100 mA g−1 after 240 cycles for Li-ion batteries and a reversible capacity of 393.4 mA h g−1 at 50 mA g−1 after 240 cycles for Na-ion batteries, which are much better than those of the ZnSb–C particle composites. The enhanced electrochemical performance can be attributed to the special microflower-like and porous structure as well as the synchronously formed continuous amorphous carbon matrix.

Graphical abstract: Synthesis of ZnSb@C microflower composites and their enhanced electrochemical performance for lithium-ion and sodium-ion batteries

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Publication details

The article was received on 21 Jul 2017, accepted on 02 Oct 2017 and first published on 02 Oct 2017


Article type: Paper
DOI: 10.1039/C7NJ02668D
Citation: New J. Chem., 2017, Advance Article
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    Synthesis of ZnSb@C microflower composites and their enhanced electrochemical performance for lithium-ion and sodium-ion batteries

    L. Fan, Y. Liu, A. G. Tamirat, Y. Wang and Y. Xia, New J. Chem., 2017, Advance Article , DOI: 10.1039/C7NJ02668D

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