Issue 4, 2013
From the journal:

Journal of Materials Chemistry A

Facile synthesis of a Co3O4–carbon nanotube composite and its superior performance as an anode material for Li-ion batteries

Linhai Zhuo,ac   Yingqiang Wu,acd   Jun Ming,ac   Lingyan Wang,acd   Yancun Yu,ac   Xinbo Zhang*b  and  Fengyu Zhao*ac  

* Corresponding authors

a State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, P. R. China
E-mail: zhaofy@ciac.jl.cn

b State Key Laboratory of Rare Earth Resource Utilizations, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, P. R. China
E-mail: xbzhang@ciac.jl.cn

c Laboratory of Green Chemistry and Process, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
Fax: +86-431-85262410
Tel: +86-431-85262410

d University of the Chinese Academy of Sciences, Beijing 100049, China

Abstract

In this work, we report a facile method for the synthesis of a Co3O4–functionalized carbon nanotube (Co3O4–f-CNT) composite via the growth of Co3O4 nanoparticles on the surface of functionalized carbon nanotubes (f-CNTs) by thermal decomposition of cobalt nitrate hexahydrate in ethanol. The composite consists of 13% carbon nanotubes and 87% Co3O4 nanoparticles by weight, and all the Co3O4 particles grew compactly along the carbon nanotube axis with a highly uniform dispersion. When used as an anode material for rechargeable lithium ion batteries, the composite manifested high capacities and excellent cycling performance at high and low current rates. The discharge capacity was 719 mA h g−1 at the 2nd cycle and 776 mA h g−1 at the 100th cycle. Even at a current density of 1 A g−1, the specific capacity still remained at about 600 mA h g−1. This superior electrochemical performance was attributed to the unique nanostructure of the composite. Because almost all of the Co3O4 nanoparticles were immobilized on the surface of f-CNTs, physical aggregation of nanoparticles was avoided during the charge–discharge processes. Furthermore, the good mechanical flexibility of f-CNTs can readily alleviate the massive volume expansion/shrinkage associated with a conversion reaction electrode. Finally, f-CNTs are highly conductive matrices for electrons due to their high conductivity, which can shorten the diffusion path for electrons.

Graphical abstract: Facile synthesis of a Co3O4–carbon nanotube composite and its superior performance as an anode material for Li-ion batteries

About
Cited by
Related
Download options Please wait...

Article information

DOI
https://doi.org/10.1039/C2TA00284A
Article type
Paper
Submitted
12 Sep 2012
Accepted
09 Nov 2012
First published
12 Nov 2012

J. Mater. Chem. A, 2013,1, 1141-1147

Permissions

Request permissions

Facile synthesis of a Co3O4–carbon nanotube composite and its superior performance as an anode material for Li-ion batteries

L. Zhuo, Y. Wu, J. Ming, L. Wang, Y. Yu, X. Zhang and F. Zhao, J. Mater. Chem. A, 2013, 1, 1141 DOI: 10.1039/C2TA00284A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements