Biomineralized Sn-based multiphasic nanostructures for Li-ion battery electrodes

Ah Hyeon Lim, Hyun Woo Shim, Seung Deok Seo, Gwang Hee Lee, Kyung Soo Park, Dong-Wan Kim

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

A method for preparing multiphasic hollow rods consisting of nanoscale Sn-based materials through a thermochemical reduction process involving bacteria and Sn oxides is reported. This facile process involves the bacteria-mediated synthesis of SnO 2 nanoparticles that form on bacterial surfaces used as templates at room temperature. The subsequent template removal proceeds via a reduction of the heat-treated SnO 2 nanoparticles at 400°C under reduction atmosphere, leaving free-standing hollow nanocomposite rods. These unique hollow nanocomposite rods have multiple components, including amorphous carbon, metal oxides (SnO 2 and SnO), and metallic Sn, and retain the original rod shapes. The systematic phase and morphological evolutions of the bacteria@SnO 2 composite rods are investigated by performing controlled thermochemical reduction at various temperatures. In addition, the application of multiphasic hollow nanocomposite rods as anode materials for rechargeable Li-ion batteries is evaluated. These materials exhibit excellent electrochemical performance, with capacities of about 505 and 350 mA h g -1 at current densities of 157 and 392 mA g -1, respectively. This journal is

Original languageEnglish
Pages (from-to)4694-4701
Number of pages8
JournalNanoscale
Volume4
Issue number15
DOIs
Publication statusPublished - 2012 Aug 7
Externally publishedYes

Fingerprint

Nanostructures
Nanocomposites
Bacteria
Electrodes
Oxides
Nanoparticles
Amorphous carbon
Anodes
Current density
Metals
Temperature
Lithium-ion batteries
Composite materials

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Lim, A. H., Shim, H. W., Seo, S. D., Lee, G. H., Park, K. S., & Kim, D-W. (2012). Biomineralized Sn-based multiphasic nanostructures for Li-ion battery electrodes. Nanoscale, 4(15), 4694-4701. https://doi.org/10.1039/c2nr31056b

Biomineralized Sn-based multiphasic nanostructures for Li-ion battery electrodes. / Lim, Ah Hyeon; Shim, Hyun Woo; Seo, Seung Deok; Lee, Gwang Hee; Park, Kyung Soo; Kim, Dong-Wan.

In: Nanoscale, Vol. 4, No. 15, 07.08.2012, p. 4694-4701.

Research output: Contribution to journalArticle

Lim, Ah Hyeon ; Shim, Hyun Woo ; Seo, Seung Deok ; Lee, Gwang Hee ; Park, Kyung Soo ; Kim, Dong-Wan. / Biomineralized Sn-based multiphasic nanostructures for Li-ion battery electrodes. In: Nanoscale. 2012 ; Vol. 4, No. 15. pp. 4694-4701.
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