The electrochemical characteristics of Ag2S and its nanocomposite anodes for Li-ion batteries

Yoon Hwa, Cheol Min Park, Hun Joon Sohn

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

The suitability of silver sulfide (Ag2S) and its nanocomposite Ag2S/C, prepared by simple solid-state synthetic routes such as high-energy mechanical milling and heat treatment, for use as anode materials in rechargeable Li-ion batteries has been investigated. A well-developed Ag 2S phase is identified from X-ray diffraction (XRD) patterns, and XRD and high-resolution transmission electron microscopy observations confirm that Ag2S nanocrystallites in Ag2S/C are uniformly distributed within an amorphous carbon matrix. The electrochemical reaction mechanism of Ag2S with Li is identified by ex situ XRD analyses of an Ag 2S/C nanocomposite electrode. The Ag2S/C nanocomposite anode shows good cycling behavior and a high capacity of about 430 mA h g -1 after 100 cycles.

Original languageEnglish (US)
Pages (from-to)24-29
Number of pages6
JournalJournal of Electroanalytical Chemistry
Volume667
DOIs
StatePublished - Feb 15 2012
Externally publishedYes

Keywords

  • Anode materials
  • Lithium batteries
  • Nanocomposite

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Electrochemistry

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