Issue 7, 2018

Self-assembled Mn-doped MoS2 hollow nanotubes with significantly enhanced sodium storage for high-performance sodium-ion batteries

Abstract

In this work, Mn-doped MoS2 hierarchical nanotubes have been prepared by a solvothermal method. The diameter of Mn-MoS2 nanotubes is about 100–200 nm and the wall thickness is about 10–20 nm. Hierarchical ultrathin sheets are formed on the surface of MoS2 nanotubes. The formation mechanism of Mn-MoS2 nanotubes is discussed on the basis of contrast experiments. The hollow structure and hierarchical surface can provide more Na+ insertion/extraction sites and alleviate volume expansion. Besides these, the doping of Mn into MoS2 will enlarge the interplanar spacing, which consequently benefits the extraction/insertion processes of Na+ ions. A specific capacity of 441 mA h g−1 was achieved at a current density of 0.1 A g−1. A capacity of 160 mA h g−1 is still maintained after 1000 cycles even at the current density of 1 A g−1, indicating excellent cycling stability. The results suggest that Mn-MoS2 hierarchical nanotubes can be promising candidates for high performance SIBs.

Graphical abstract: Self-assembled Mn-doped MoS2 hollow nanotubes with significantly enhanced sodium storage for high-performance sodium-ion batteries

Supplementary files

Article information

Article type
Research Article
Submitted
28 Mar 2018
Accepted
25 Apr 2018
First published
25 Apr 2018

Inorg. Chem. Front., 2018,5, 1587-1593

Self-assembled Mn-doped MoS2 hollow nanotubes with significantly enhanced sodium storage for high-performance sodium-ion batteries

T. Zheng, G. Li, J. Dong, Q. Sun and X. Meng, Inorg. Chem. Front., 2018, 5, 1587 DOI: 10.1039/C8QI00285A

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