期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 3, 期 19, 页码 10466-10470出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ta00472a
关键词
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资金
- National Natural Science Foundation of China [51201037]
- Beijing Natural Science Foundation [2122020]
- national high technology research and development program (863 Program) [2013AA032002, 2015AA034601]
- China Iron & steel Research Institute Group Foundation [SHI11AT0540A]
- Advance Technology & Materials Co., Ltd Innovation Foundation [2011JA01GYF, 2011JA02GYF, 2013JA02PYF]
A facile high-energy ball-milling method is developed to synthesize MoS2-graphite (MoS2-C) nanocomposites, which can be used for scalable industrial mass production. As an anode material for a lithium-ion battery, the obtained MoS2-C composite with 30% C shows a discharge capacity as high as 736 mA h g(-1) in the first cycle and retains the capacity of up to 720 mA h g(-1) after 200 cycles at a current density of 100 mA g(-1). Even at a large rate of 2000 mA g(-1), the reversible capacity is still 428 mA h g(-1). Moreover, a high Coulombic efficiency is attained. After carefully comparing it with a MoS2-C composite with 20% C, raw MoS2 and pure ball-milled MoS2, we ascribe the remarkably improved performance of the MoS2-C composite with 30% C to the synergistic effect of carbon coating and nano-crystallization derived by ball milling.
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