Carbon nanotube/graphene composite for enhanced capacitive deionization performance

Yasodinee Wimalasiri; Linda Zou

doi:10.1016/j.carbon.2013.03.040

Carbon nanotube/graphene composite for enhanced capacitive deionization performance

Yasodinee Wimalasiri
, Linda Zou

Civil & Environmental Engineering

University of South Australia

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

249 Scopus citations

Abstract

In this study, single-walled carbon nanotubes were combined with graphene oxide nanosheets in aqueous dispersion and then chemically reduced to form the carbon nanotube/graphene (CNT/G) composite as electrodes for capacitive deionization (CDI). The structure of the CNT/G composite was highly porous, with single-walled carbon nanotubes (SWCNTs) sandwiched between graphene sheets that functioned as spacers and provided diffusion paths for smooth and rapid ion conduction. The associated increase in the electrical double-layer capacitance enhanced capacitive deionization performance. The CNT/G composite achieved a specific capacitance of 220 F/g and an electrosorption capacity of 26.42 mg/g with 100% regeneration, showing great potential as a high performance electrode material in CDI applications.

Original language	British English
Pages (from-to)	464-471
Number of pages	8
Journal	Carbon
Volume	59
DOIs	https://doi.org/10.1016/j.carbon.2013.03.040
State	Published - Aug 2013

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title = "Carbon nanotube/graphene composite for enhanced capacitive deionization performance",

abstract = "In this study, single-walled carbon nanotubes were combined with graphene oxide nanosheets in aqueous dispersion and then chemically reduced to form the carbon nanotube/graphene (CNT/G) composite as electrodes for capacitive deionization (CDI). The structure of the CNT/G composite was highly porous, with single-walled carbon nanotubes (SWCNTs) sandwiched between graphene sheets that functioned as spacers and provided diffusion paths for smooth and rapid ion conduction. The associated increase in the electrical double-layer capacitance enhanced capacitive deionization performance. The CNT/G composite achieved a specific capacitance of 220 F/g and an electrosorption capacity of 26.42 mg/g with 100\% regeneration, showing great potential as a high performance electrode material in CDI applications.",

author = "Yasodinee Wimalasiri and Linda Zou",

note = "Funding Information: The authors acknowledge the financial support of the National Centre of Excellence in Desalination Australia (NCEDA), which is funded by the Australian Government through the Water for the Future initiative.",

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T1 - Carbon nanotube/graphene composite for enhanced capacitive deionization performance

AU - Wimalasiri, Yasodinee

AU - Zou, Linda

N1 - Funding Information: The authors acknowledge the financial support of the National Centre of Excellence in Desalination Australia (NCEDA), which is funded by the Australian Government through the Water for the Future initiative.

PY - 2013/8

Y1 - 2013/8

N2 - In this study, single-walled carbon nanotubes were combined with graphene oxide nanosheets in aqueous dispersion and then chemically reduced to form the carbon nanotube/graphene (CNT/G) composite as electrodes for capacitive deionization (CDI). The structure of the CNT/G composite was highly porous, with single-walled carbon nanotubes (SWCNTs) sandwiched between graphene sheets that functioned as spacers and provided diffusion paths for smooth and rapid ion conduction. The associated increase in the electrical double-layer capacitance enhanced capacitive deionization performance. The CNT/G composite achieved a specific capacitance of 220 F/g and an electrosorption capacity of 26.42 mg/g with 100% regeneration, showing great potential as a high performance electrode material in CDI applications.

AB - In this study, single-walled carbon nanotubes were combined with graphene oxide nanosheets in aqueous dispersion and then chemically reduced to form the carbon nanotube/graphene (CNT/G) composite as electrodes for capacitive deionization (CDI). The structure of the CNT/G composite was highly porous, with single-walled carbon nanotubes (SWCNTs) sandwiched between graphene sheets that functioned as spacers and provided diffusion paths for smooth and rapid ion conduction. The associated increase in the electrical double-layer capacitance enhanced capacitive deionization performance. The CNT/G composite achieved a specific capacitance of 220 F/g and an electrosorption capacity of 26.42 mg/g with 100% regeneration, showing great potential as a high performance electrode material in CDI applications.

UR - https://www.scopus.com/pages/publications/84877696848

U2 - 10.1016/j.carbon.2013.03.040

DO - 10.1016/j.carbon.2013.03.040

M3 - Article

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SN - 0008-6223

VL - 59

SP - 464

EP - 471

JO - Carbon

JF - Carbon

ER -

Carbon nanotube/graphene composite for enhanced capacitive deionization performance

Abstract

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