Issue 6, 2017, Issue in Progress

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

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 g−1 at 10C after 500 cycles. As anode for sodium ion batteries, it has reversible capacity of 82 mA h g−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

Supplementary files

Article information

Article type
Paper
Submitted
22 Oct 2016
Accepted
15 Dec 2016
First published
13 Jan 2017
This article is Open Access
Creative Commons BY license

RSC Adv., 2017,7, 3293-3301

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

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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