期刊
NANOSCALE
卷 10, 期 7, 页码 3159-3165出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7nr09441h
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资金
- Research Grants Council of the Hong Kong Special Administrative Region, China [CityU 103409]
- Basic Research Project of Knowledge Innovation Program of Shenzhen City [JCYJ20160229165250876]
Antimony sulfide can be used as a promising anode material for lithium ion batteries due to its high theoretical specific capacity derived from sequential conversion and alloying lithium insertion reactions. However, the volume variation during the lithiation/delithiation process leads to capacity fading and cyclic instability. We report a facile, one-pot hydrothermal strategy to prepare Sb2S3 nanorods wrapped in graphene sheets that are promising anode materials for lithium ion batteries. The graphene sheets serve a dual function: as heterogeneous nucleation centers in the formation process of Sb2S3 nanorods, and as a structural buffer to accommodate the volume variation during the cycling process. The resulting composites exhibit excellent electrochemical performance with a highly reversible specific capacity of similar to 910 mA h g(-1), cycling at 100 mA g(-1), as well as good rate capability and cyclic stability derived from their unique structural features.
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