期刊
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
卷 667, 期 -, 页码 24-29出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2011.12.017
关键词
Lithium batteries; Anode materials; Nanocomposite; Silver sulfide (Ag2S)
资金
- National Research Foundation of Korea (NRF)
- Ministry of Education, Science and Technology [2011-0013624]
- National Research Foundation of Korea [2011-0013624] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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