Columnar assembly and successive heating of colloidal 2D nanomaterials on graphene as an efficient strategy for new anode materials in lithium ion batteries: the case of In2S3 nanoplates

Jaewon Choi; Jaewon Jin; Jeho Lee; Ji Hoon Park; Hae Jin Kim; Dong-Hwa Oh; Joung Real Ahn; Seung Uk Son

doi:10.1039/C2JM30949A

Columnar assembly and successive heating of colloidal 2D nanomaterials on graphene as an efficient strategy for new anode materials in lithium ion batteries: the case of In₂S₃ nanoplates†

Jaewon Choi,^a Jaewon Jin,^a Jeho Lee,^a Ji Hoon Park,^a Hae Jin Kim,^b Dong-Hwa Oh,^c Joung Real Ahn*^c and Seung Uk Son*^a

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* Corresponding authors

^a Department of Chemistry, Department of Energy Science, Sungkyunkwan University, Suwon 440-746, Korea
E-mail: sson@skku.edu
Fax: +82-031-290-4572
Tel: +82-031-299-5932

^b Korea Basic Science Institute, Daejeon 350-333, Korea

^c Department of Physics and SAINT, Sungkyunkwan University, Suwon 440-746, Korea
E-mail: jrahn@skku.edu

Abstract

This study shows that heat-treatment of colloidal inorganic nanoplates with columnar assembly under argon is a good strategy for development of anode materials. The heating of colloidal In₂S₃ nanoplates under argon resulted in the formation of film-like materials through interconnection of plates in a side by side manner. When the columnarly assembled colloidal In₂S₃ plates were heated at 400 °C under argon for 2 hours on graphene, more efficient anode materials with smaller diameters were obtained. Interestingly, the heat-treated columnarly assembled In₂S₃ plates on graphene had a layered structure, which was attributed to the possible existence of carbon materials between plates formed by the heat-treatment of surfactants under argon. The resultant graphene–In₂S₃ composites showed enhanced discharge capacities, up to 716–837 mA h g⁻¹, as well as excellent stabilities. In addition, the materials showed promising coulombic efficiencies and rate performances. We believe that, based on the strategy in this work, diverse graphene–inorganic nanomaterial composites with a layered structure can be prepared and applied as new anode materials in lithium ion batteries.

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Article information

DOI: https://doi.org/10.1039/C2JM30949A
Article type: Paper
Submitted: 15 Feb 2012
Accepted: 29 Mar 2012
First published: 29 Mar 2012

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J. Mater. Chem., 2012,22, 11107-11112

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Columnar assembly and successive heating of colloidal 2D nanomaterials on graphene as an efficient strategy for new anode materials in lithium ion batteries: the case of In₂S₃ nanoplates

J. Choi, J. Jin, J. Lee, J. H. Park, H. J. Kim, D. Oh, J. R. Ahn and S. U. Son, J. Mater. Chem., 2012, 22, 11107 DOI: 10.1039/C2JM30949A

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Journal of Materials Chemistry