Issue 46, 2013

Freeze-dried WS2 composites with low content of graphene as high-rate lithium storage materials

Abstract

Few layered WS2–graphene nanosheet composites are prepared by a simple and scalable hydrothermal reaction and a subsequent freeze-drying method. The freeze-dried WS2–graphene composite exhibits good cycling stability and outstanding high-rate capability of lithium storage. The reversible capacity remains 647 mA h g−1 after 80 cycles at a current density of 0.35 A g−1. Comparable capacities of 541 and 296 mA h g−1 can still be maintained when cycling at even higher current densities of 7 and 14 A g−1 (7 and 14 mA cm−2) respectively.

Graphical abstract: Freeze-dried WS2 composites with low content of graphene as high-rate lithium storage materials

Supplementary files

Article information

Article type
Paper
Submitted
22 Aug 2013
Accepted
02 Oct 2013
First published
03 Oct 2013

J. Mater. Chem. A, 2013,1, 14548-14554

Freeze-dried WS2 composites with low content of graphene as high-rate lithium storage materials

X. Xu, C. S. Rout, J. Yang, R. Cao, P. Oh, H. S. Shin and J. Cho, J. Mater. Chem. A, 2013, 1, 14548 DOI: 10.1039/C3TA13329J

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