Structural and electrochemical properties of Ag nano-dots combined amorphous Si electrodes for thin-film lithium rechargeable batteries

Hyo Jin Ahn, Youn Su Kim, Hee Sang Shim, Byung Kyu Park, Won Jin Moon, Won Bae Kim, Tae Yeon Seong

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We have one-pot fabricated Si-based nanocomposite electrodes containing Ag nano-dots for thinfilm Li rechargeable batteries by a co-sputtering method. The structural and electrochemical properties of the Si/Ag nanocomposite electrodes are investigated via transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), and cycler. The TEM and XRD results show that crystalline Ag nano-dots (∼5-9 in size) are well-dispersed within an amorpohous Si matrix. It is shown that the Si/Ag nanocomposite electrode shows much better structural stability than the Si only sample. It is also shown that the Si/Ag nanocomposite electrode shows superior capacity retention compared to the Si only electrode. The results indicate that the presence of the Ag nano-dots is important minimizing the formation of cracks in the electrode, so leading to the better life-time for thin-film Li rechargeable batteries.

Original languageEnglish
Pages (from-to)8199-8203
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Volume10
Issue number12
DOIs
Publication statusPublished - 2010 Dec

Keywords

  • Ag nanostructures
  • Co-sputtering
  • Insertion/extraction
  • Li rechargeable batteries
  • Reversible capacity
  • Si

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

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