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- Shin, Hyeon Suk
- Lab for Carbon and 2D Materials
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Lithium reaction mechanism and high rate capability of VS 4-graphene nanocomposite as an anode material for lithium batteries
- Author(s)
- Xu, Xiaodong, Jeong, Sookyung, Rout, Chandra Sekhar, Oh, Pilgun, Ko, Minseong, Kim, Hyejung, Kim, Min Gyu, Cao, Ruiguo, Shin, Hyeon Suk, Cho, Jaephil
- Issued Date
- 2014-07
- Citation
- JOURNAL OF MATERIALS CHEMISTRY A, v.2, no.28, pp.10847 - 10853
- Abstract
- A graphene-attached VS4 composite prepared by a simple hydrothermal method is studied in terms of its lithium reaction mechanism and high rate capability. The nanocomposite exhibits a good cycling stability and an impressive high-rate capability for lithium storage, delivering a comparable capacity of 630 and 314 mA h g-1, even at high rates of 10 and 20 C (=10 and 20 A g-1, or 10 and 20 mA cm-2), respectively. In addition, full-cell (LiMn2O4/VS4-graphene) test results also exhibited a good capacity retention. The mechanism of Li storage is systematically studied and a conversion reaction with an irreversible phase change during the initial discharge-charge process is proposed.
- Publisher
- ROYAL SOC CHEMISTRY
- ISSN
- 2050-7488
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