Fabrication of layered Ti3C2 with an accordion-like structure as a potential cathode material for high performance lithium–sulfur batteries

Xiaoqin Zhao; Min Liu; Yong Chen; Bo Hou; Na Zhang; Binbin Chen; Ning Yang; Ke Chen; Jianlin Li; Linan An

doi:10.1039/C4TA07101H

Fabrication of layered Ti₃C₂ with an accordion-like structure as a potential cathode material for high performance lithium–sulfur batteries

Xiaoqin Zhao,^a Min Liu,^a Yong Chen,*^a Bo Hou,^a Na Zhang,^a Binbin Chen,^b Ning Yang,^a Ke Chen,^a Jianlin Li^a and Linan An^c

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* Corresponding authors

^a Laboratory of Tropic Biological Resources, MOE, Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Laboratory of Research on Utilization of Si-Zr-Ti Resources, Hainan University, 58 Renmin Road, Haikou 570228, China
E-mail: ychen2002@163.com
Fax: +86-898-66291383
Tel: +86-898-66279122

^b Huzhou Jintai Science and Technology Co., LTD, 999 Seven Lucky Road, Wuxing, Huzhou, China

^c Advanced Materials Processing and Analysis Center, Department of Materials Science and Engineering, University of Central Florida, Orlando, FL 32816, USA
E-mail: Linan.An@ucf.edu
Fax: +1407-823-0208
Tel: +1407-823-1009

Abstract

In order to enhance the long-term stability of sulfur cathodes used in rechargeable high energy lithium–sulfur (Li–S) batteries, layered Ti₃C₂ (L-Ti₃C₂) with an accordion-like structure was prepared by exfoliating Ti₃AlC₂ in 40% hydrofluoric acid. The L-Ti₃C₂ was then loaded with sulfur (57.6 wt%) to form a S/L-Ti₃C₂ composite. The composite was then used as a cathode material for Li–S batteries, which showed a high initial discharge capacity of 1291 mA h g⁻¹ and an excellent capacity retention of 970 mA h g⁻¹ after 100 cycles. The results suggest that two-dimensional carbides, similar to graphene and/or graphite, are a promising material for a wide range of applications in Li–S batteries and other electrochemical energy storage devices.

Journal of Materials Chemistry A

Fabrication of layered Ti₃C₂ with an accordion-like structure as a potential cathode material for high performance lithium–sulfur batteries

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Fabrication of layered Ti₃C₂ with an accordion-like structure as a potential cathode material for high performance lithium–sulfur batteries

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