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Issue 30, 2011
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An in situ method of creating metal oxide–carbon composites and their application as anode materials for lithium-ion batteries

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Abstract

Transition metal oxides are actively investigated as anode materials for lithium-ion batteries (LIBs), and their nanocomposites with carbon frequently show better performance in galvanostatic cycling studies, compared to the pristine metal oxide. An in situ, scalable method for creating a variety of transition metal oxide–carbon nanocomposites has been developed based on free-radical polymerization and cross-linking of poly(acrylonitrile) in the presence of the metal oxide precursor containing vinyl groups. The approach yields a cross-linked polymer network, which uniformly incorporates nanometre-sized transition metal oxide particles. Thermal treatment of the organic–inorganic hybrid material produces nearly monodisperse metal oxide nanoparticles uniformly embedded in a porous carbon matrix. Cyclic voltammetry and galvanostatic cycling electrochemical measurements in a lithium half-cell are used to evaluate the electrochemical properties of a Fe3O4–carbon composite created using this approach. These measurements reveal that when used as the anode in a lithium battery, the material exhibits stable cycling performance at both low and high current densities. We further show that the polymer/nanoparticle copolymerization approach can be readily adapted to synthesize metal oxide/carbon nanocomposites based on different particle chemistries for applications in both the anode and cathode of LIBs.

Graphical abstract: An in situ method of creating metal oxide–carbon composites and their application as anode materials for lithium-ion batteries

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Article information


Submitted
02 Mar 2011
Accepted
13 Jun 2011
First published
30 Jun 2011

J. Mater. Chem., 2011,21, 11092-11097
Article type
Communication

An in situ method of creating metal oxide–carbon composites and their application as anode materials for lithium-ion batteries

Z. Yang, J. Shen and L. A. Archer, J. Mater. Chem., 2011, 21, 11092
DOI: 10.1039/C1JM10902B

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