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The electrochemical characteristics of Ag2S and its nanocomposite anodes for Li-ion batteries
- Authors
- Hwa, Yoon; Park, Cheol-Min; Sohn, Hun-Joon
- Issue Date
- 15-Feb-2012
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Lithium batteries; Anode materials; Nanocomposite; Silver sulfide (Ag2S)
- Citation
- JOURNAL OF ELECTROANALYTICAL CHEMISTRY, v.667, pp 24 - 29
- Pages
- 6
- Journal Title
- JOURNAL OF ELECTROANALYTICAL CHEMISTRY
- Volume
- 667
- Start Page
- 24
- End Page
- 29
- ISSN
- 1572-6657
1873-2569
- 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 Ag2S 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 Ag2S/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. (C) 2012 Elsevier B.V. All rights reserved.
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