Synthesis of Cu xS/Cu nanotubes and their lithium storage properties

Ren Cai; Jing Chen; Jixin Zhu; Chen Xu; Wenyu Zhang; Cuimiao Zhang; Wenhui Shi; Huiteng Tan; Dan Yang; Huey Hoon Hng; Tuti Mariana Lim; Qingyu Yan

doi:10.1021/jp303120d

Synthesis of Cu _xS/Cu nanotubes and their lithium storage properties

Ren Cai, Jing Chen, Jixin Zhu, Chen Xu, Wenyu Zhang, Cuimiao Zhang, Wenhui Shi, Huiteng Tan, Dan Yang, Huey Hoon Hng, Tuti Mariana Lim, Qingyu Yan^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

95 Citations (Scopus)

Abstract

Novel Cu _xS/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 Cu _xS/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, Cu _xS/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.

Original language	English
Pages (from-to)	12468-12474
Number of pages	7
Journal	Journal of Physical Chemistry C
Volume	116
Issue number	23
DOIs	https://doi.org/10.1021/jp303120d
Publication status	Published - Jun 14 2012
Externally published	Yes

ASJC Scopus Subject Areas

Electronic, Optical and Magnetic Materials
General Energy
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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10.1021/jp303120d

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title = "Synthesis of Cu xS/Cu nanotubes and their lithium storage properties",

abstract = "Novel Cu xS/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 Cu xS/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, Cu xS/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.",

author = "Ren Cai and Jing Chen and Jixin Zhu and Chen Xu and Wenyu Zhang and Cuimiao Zhang and Wenhui Shi and Huiteng Tan and Dan Yang and Hng, \{Huey Hoon\} and Lim, \{Tuti Mariana\} and Qingyu Yan",

year = "2012",

month = jun,

day = "14",

doi = "10.1021/jp303120d",

language = "English",

volume = "116",

pages = "12468--12474",

journal = "Journal of Physical Chemistry C",

issn = "1932-7447",

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TY - JOUR

T1 - Synthesis of Cu xS/Cu nanotubes and their lithium storage properties

AU - Cai, Ren

AU - Chen, Jing

AU - Zhu, Jixin

AU - Xu, Chen

AU - Zhang, Wenyu

AU - Zhang, Cuimiao

AU - Shi, Wenhui

AU - Tan, Huiteng

AU - Yang, Dan

AU - Hng, Huey Hoon

AU - Lim, Tuti Mariana

AU - Yan, Qingyu

PY - 2012/6/14

Y1 - 2012/6/14

N2 - Novel Cu xS/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 Cu xS/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, Cu xS/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.

AB - Novel Cu xS/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 Cu xS/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, Cu xS/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.

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EP - 12474

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

IS - 23

ER -

Synthesis of Cu _xS/Cu nanotubes and their lithium storage properties

Abstract

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