Facile synthesis of MWCNT-ZnFe2O4 nanocomposites as anode materials for lithium ion batteries

Sui, Jiehe, Zhang, Cheng, Hong, Da, Li, Jing, Cheng, Qian, Li, Zhiguo and Cai, Wei (2012) Facile synthesis of MWCNT-ZnFe2O4 nanocomposites as anode materials for lithium ion batteries. Journal of Materials Chemistry, 22 27: 13674-13681. doi:10.1039/c2jm31905e


Author Sui, Jiehe
Zhang, Cheng
Hong, Da
Li, Jing
Cheng, Qian
Li, Zhiguo
Cai, Wei
Title Facile synthesis of MWCNT-ZnFe2O4 nanocomposites as anode materials for lithium ion batteries
Formatted title
Facile synthesis of MWCNT-ZnFe2O4 nanocomposites as anode materials for lithium ion batteries
Journal name Journal of Materials Chemistry   Check publisher's open access policy
ISSN 0959-9428
Publication date 2012-07-21
Year available 2016
Sub-type Article (original research)
DOI 10.1039/c2jm31905e
Open Access Status Not yet assessed
Volume 22
Issue 27
Start page 13674
End page 13681
Total pages 8
Place of publication Cambridge, United Kingdom
Publisher Royal Society of Chemistry
Language eng
Formatted abstract
Monodisperse ZnFe2O4 nanoparticles with sizes less than 10 nm have been successfully assembled on multi-walled carbon nanotubes (MWCNTs) by in situ high-temperature decomposition of the precursor iron(III) acetylacetonate, zinc acetate and MWCNTs in polyol solution. A possible formation mechanism was proposed, which suggests that the ZnFe2O4 nanoparticles are formed on the surface of MWCNTs through an aggregation thermochemical reaction process between ZnO and γ-Fe2O3 subparticles. It was found that the coverage density on the MWCNTs could be easily controlled by changing the concentration of the precursor. As anode materials for Li-ion batteries, the MWCNT–ZnFe2O4 nanocomposites showed high rate capability and superior cycling stability with a specific capacity of 1152 mA h g−1, which was much higher than that of ZnFe2O4 nanoparticles. The MWCNTs served as good electron conductors and volume buffers in improving the lithium performance of MWCNT–ZnFe2O4 nanocomposites during the discharge–charge process. Magnetic measurements showed that the MWCNT–ZnFe2O4 nanocomposites are superparamagnetic at room temperature and the magnetization of the samples can be controlled by the reaction conditions. The as-synthesized MWCNT–ZnFe2O4 nanocomposites are water dispersible and can be manipulated by an external magnetic field. Therefore, the nanocomposites have significant potential for application in the fields of energy storage, composites, wastewater treatment and biomaterials.
Keyword Electrochemistry
Electrochemistry
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID 21143006
15-9-2-118-nsh
2015135
2015GA741009
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Australian Institute for Bioengineering and Nanotechnology Publications
 
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Created: Fri, 28 Oct 2016, 00:32:41 EST by Cheng Zhang on behalf of Learning and Research Services (UQ Library)