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Title: Synthesis of CuxS/Cu nanotubes and their lithium storage properties
Authors: Cai, Ren
Chen, Jing
Zhu, Jixin
Xu, Chen
Zhang, Wenyu
Zhang, Cuimiao
Shi, Wenhui
Tan, Huiteng
Yang, Dan
Lim, Tuti Mariana
Hng, Huey Hoon
Yan, Qingyu
Issue Date: 2012
Source: Cai, R., Chen, J., Zhu, J., Xu, C., Zhang, W., Zhang, C., et al. (2012). Synthesis of CuxS/Cu Nanotubes and Their Lithium Storage Properties. The Journal of Physical Chemistry C, 116(23), 12468-12474.
Series/Report no.: The journal of physical chemistry C
Abstract: Novel CuxS/Cu (1 < x <2) nanotubes were prepared by a facile wet chemical approach in polyethylene glycol (PEG). Here, Cu nanowires were presynthesized and then converted to nanotubes via a mass diffusion process. A thin PEG layer is physically adsorbed on the nanotube surface. The obtained CuxS/Cu nanotubes show good Li storage properties with stable cyclability upon Li ion insertion/extraction, which is attributed to the existence of the PEG capping and the reduced dissolution of Li polysulfides into the electrolytes. Furthermore, CuxS/Cu nanotubes with 10 wt % Cu show promising rate capabilities (a fifth-cycle discharge capacity of 282 mA h g–1 at a current density of 5 A g–1) due to the enhanced kinetics of charge transfer.
DOI: 10.1021/jp303120d
Fulltext Permission: none
Fulltext Availability: No Fulltext
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