Issue 8, 2015

Multiwalled carbon nanotube@a-C@Co9S8 nanocomposites: a high-capacity and long-life anode material for advanced lithium ion batteries

Abstract

A one-dimensional MWCNT@a-C@Co9S8 nanocomposite has been prepared via a facile solvothermal reaction followed by a calcination process. The amorphous carbon layer between Co9S8 and MWCNT acts as a linker to increase the loading of sulfides on MWCNT. When evaluated as anode materials for lithium ion batteries, the MWCNT@a-C@Co9S8 nanocomposite shows the advantages of high capacity and long life, superior to Co9S8 nanoparticles and MWCNT@Co9S8 nanocomposites. The reversible capacity could be retained at 662 mA h g−1 after 120 cycles at 1 A g−1. The efficient synthesis and excellent performances of this nanocomposite offer numerous opportunities for other sulfides as a new anode for lithium ion batteries.

Graphical abstract: Multiwalled carbon nanotube@a-C@Co9S8 nanocomposites: a high-capacity and long-life anode material for advanced lithium ion batteries

Supplementary files

Article information

Article type
Paper
Submitted
03 Dec 2014
Accepted
17 Jan 2015
First published
19 Jan 2015

Nanoscale, 2015,7, 3520-3525

Multiwalled carbon nanotube@a-C@Co9S8 nanocomposites: a high-capacity and long-life anode material for advanced lithium ion batteries

Y. Zhou, D. Yan, H. Xu, S. Liu, J. Yang and Y. Qian, Nanoscale, 2015, 7, 3520 DOI: 10.1039/C4NR07143C

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