Evidence for nano-Si clusters in amorphous SiO anode materials for rechargeable Li-ion batteries

H. Sepehri-Amin, T. Ohkubo, M. Kodzuka, H. Yamamura, T. Saito, H. Iba, K. Hono

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

Atom probe tomography and high resolution transmission electron microscopy have shown the presence of nano-sized amorphous Si clusters in non-disproportionated amorphous SiO powders are under consideration for anode materials in Li-ion batteries. After Li insertion/extraction, no change was found in the chemistry and structure of the Si clusters. However, Li atoms were found to be trapped at the amorphous SiO phase after Li insertion/extraction, which may be attributed to the large capacity fade after the first charge/discharge cycle.

Original languageEnglish
Pages (from-to)92-95
Number of pages4
JournalScripta Materialia
Volume69
Issue number1
DOIs
Publication statusPublished - 2013 Jul 1
Externally publishedYes

Keywords

  • Atom probe tomography
  • Li-ion batteries
  • Microstructure
  • SiO

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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