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Title: Controlled synthesis of carbon-coated cobalt sulfide nanostructures in oil phase with enhanced Li storage performances
Authors: Shi, Wenhui
Zhu, Jixin
Rui, Xianhong
Cao, Xiehong
Chen, Charlottle
Zhang, Hua
Hng, Huey Hoon
Yan, Qingyu
Issue Date: 2012
Source: Shi, W., Zhu, J., Rui, X., Cao, X., Chen, C., Zhang, H., et al. (2012). Controlled Synthesis of Carbon-Coated Cobalt Sulfide Nanostructures in Oil Phase with Enhanced Li Storage Performances. ACS Applied Materials & Interfaces, 4(6), 2999-3006.
Series/Report no.: ACS applied materials & interfaces
Abstract: A novel solvothermal process was developed for the synthesis of carbon-coated Co9S8 nanodandelions using 1-dodecanethiol as the sulfur source and the soft template. Replacing 1-dodecanethiol with sulfur powder as the sulfur source leads to the formation of 20 nm Co9S8 nanoparticles without carbon coating. When tested as LIB anode, the C@Co9S8 dandelion delivers a specific capacity of 520 mA h g–1 at a current density of 1 A g–1 (1.8 C) during the 50th cycle, which is much higher than that of Co9S8 nanoparticles (e.g. 338 mA h g–1). Furthermore, the C@Co9S8 dandelion also exhibits excellent high C-rate performance, e.g., depicts a 10th-cycle capacity of 373 mA h g–1 at a current density of 6 A g–1 (10.9 C), which is better than that of many reported anode materials. Such synthesis approach is attractive for the preparation of sulfide anode materials with high Li storage properties.
ISSN: 1944-8244
DOI: 10.1021/am3003654
Rights: © 2012 American Chemical Society.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MSE Journal Articles

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