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Hetero-assembly of a Li4Ti5O12 nanosheet and multi-walled carbon nanotube nanocomposite for high-performance lithium and sodium ion batteries

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Abstract

A nanocomposite composed of crystalline Li4Ti5O12 (LTO) nanosheets and multi-walled carbon nanotubes (denoted as LTO/MWCNTs) is prepared for lithium/sodium storage via a facile hetero-assembly process driven by the screening effect of electrostatic repulsion and following thermal treatment. The morphology and microstructure characterizations reveal that LTO nanosheets are embedded in a highly porous and electrically conductive MWCNT network, thereby producing robust inner-connected architectures. Owing to improved electron and ion transportation during electrochemical reaction rendered by a unique integrated architecture of two-dimensional LTO nanosheets and MWCNTs, the nanocomposite exhibits excellent lithium and sodium storage performances. For lithium ion batteries, the anode delivers reversible capacity of 149.7 mA h gāˆ’1 at 10C after 500 cycles. As anode for sodium ion batteries, it has reversible capacity of 82 mA h gāˆ’1 at 5C. The prepared LTO/MWCNT nanocomposite has great potential as a high-performance anode material for dual storage applications in lithium and sodium ion batteries.

Graphical abstract: Hetero-assembly of a Li4Ti5O12 nanosheet and multi-walled carbon nanotube nanocomposite for high-performance lithium and sodium ion batteries

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Publication details

The article was received on 22 Oct 2016, accepted on 15 Dec 2016 and first published on 13 Jan 2017


Article type: Paper
DOI: 10.1039/C6RA25651A
Citation: RSC Adv., 2017,7, 3293-3301
  • Open access: Creative Commons BY license
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    Hetero-assembly of a Li4Ti5O12 nanosheet and multi-walled carbon nanotube nanocomposite for high-performance lithium and sodium ion batteries

    Y. Tian, Z. L. Wu, G. B. Xu, L. W. Yang and J. X. Zhong, RSC Adv., 2017, 7, 3293
    DOI: 10.1039/C6RA25651A

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