SnO2/C nanocomposites as anodes in secondary Li-ion batteries

Katerina E Aifantis, S. Brutti, S. A. Hackney, T. Sarakonsri, B. Scrosati

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37 Scopus citations

Abstract

In search of higher capacity anodes for secondary Li-ion cells, it has been observed that active with respect to Li nanoparticles, such as Sn and Si, attached on the surface of a less active material, such as C, allow for high capacities to be achieved. In the present study it will be shown that deposition of SnO2 nanoparticles on an amorphous C surface allows for preferred electrochemical properties during cycling. In particular, it was found that a 8 wt% Sn-C nanocomposite provided a capacity that is 85% higher than that of the pure C matrix; the capacity of the C was 180 mAh/g, while that of the 8 wt% Sn-C was 340 mAh/g and was retained for over 500 cycles. The SnO2 particles not only provide Sn as a high capacity Li-intercalation material, but also protect the surface of the C from electrolyte decomposition.

Original languageEnglish (US)
Pages (from-to)5071-5076
Number of pages6
JournalElectrochimica Acta
Volume55
Issue number18
DOIs
Publication statusPublished - Jul 15 2010
Externally publishedYes

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Keywords

  • Amorphous carbon
  • Anodes
  • Li batteries
  • Nanocomposites
  • Tin (Sn)

ASJC Scopus subject areas

  • Electrochemistry
  • Chemical Engineering(all)

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