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Issue 72, 2015
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Microwave-assisted and large-scale synthesis of SnO2/carbon-nanotube hybrids with high lithium storage capacity

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Abstract

A novel SnO2/carbon-nanotube hybrid has been successfully synthesized at large scale by an ultrafast and environmentally benign microwave-assisted technique under atmospheric condition. The as-synthesized hybrids feature a unique structure with ultrathin SnO2 nanosheets and nanoparticles composited on multiwalled carbon nanotubes (CNTs). The specific surface area of the hybrids is as high as 145.46 m2 g−1 even with high SnO2 loading percentage of ∼85 wt%. The SnO2/carbon-nanotube hybrids used as anode material for LIB exhibit an ultrahigh initial capacity of 3247.5 mA h g−1 with a large reversible capacity of 1616.5 mA h g−1 at 200 mA g−1. After 80 repeated discharge and charge cycles, a reversible capacity of 710.4 mA h g−1 is maintained. As Compared to pure SnO2 nanosheets, the SnO2/carbon-nanotube hybrids exhibit enhanced electrochemical lithium ion storage, which could be ascribed to the unique architecture with more active sites and favorable channel for Li+ insertion/extraction. Hence, this microwave-assisted method demonstrates a high-efficiency and timesaving way to synthesize advanced SnO2-based anode materials for promising scalable commercialization.

Graphical abstract: Microwave-assisted and large-scale synthesis of SnO2/carbon-nanotube hybrids with high lithium storage capacity

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Publication details

The article was received on 01 Jun 2015, accepted on 29 Jun 2015 and first published on 29 Jun 2015


Article type: Paper
DOI: 10.1039/C5RA10314B
Citation: RSC Adv., 2015,5, 58568-58573
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    Microwave-assisted and large-scale synthesis of SnO2/carbon-nanotube hybrids with high lithium storage capacity

    J. Zhang, Y. Zhu, C. Cao and F. K. Butt, RSC Adv., 2015, 5, 58568
    DOI: 10.1039/C5RA10314B

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