Porous graphene oxide/carbon nanotube hybrid films as interlayer for lithium-sulfur batteries

Jian Qiu Huang; Zheng Long Xu; Sara Abouali; Mohammad Akbari Garakani; Jang Kyo Kim

doi:10.1016/j.carbon.2015.12.081

Porous graphene oxide/carbon nanotube hybrid films as interlayer for lithium-sulfur batteries

Jian Qiu Huang, Zheng Long Xu, Sara Abouali, Mohammad Akbari Garakani, Jang Kyo Kim (Corresponding Author)

Research output: Journal article publication › Journal article › Academic research › peer-review

252 Citations (Scopus)

Abstract

Highly porous, conductive graphene oxide (GO)/carbon nanotube (CNT) composite films are synthesized via facile vacuum filtration of hybrid dispersion. The flexible film is used as interlayer between separator and sulfur cathode to entrap active materials and prevent polysulfide shuttle. The lithium-sulfur (Li-S) battery furnished with an optimal GO/CNT interlayer delivers an excellent reversible capacity of 671 mA h/g after 300 cycles with a low degradation rate of 0.33 mA h/g or 0.043% per cycle at 0.2C. The encouraging outcome arises from synergistic effects of interlayer characteristics: Namely, (i) the porous structure facilitates easy ion transport and electrolyte penetration; (ii) the GO layers with oxygenated functional groups entrap active materials, preventing polysulfide shuttle and enhancing their recycling; and (iii) the highly conductive CNTs offer fast pathways for electron/ion transfer.

Original language	English
Pages (from-to)	624-632
Number of pages	9
Journal	Carbon
Volume	99
DOIs	https://doi.org/10.1016/j.carbon.2015.12.081
Publication status	Published - 1 Apr 2016
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
General Materials Science

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10.1016/j.carbon.2015.12.081

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title = "Porous graphene oxide/carbon nanotube hybrid films as interlayer for lithium-sulfur batteries",

abstract = "Highly porous, conductive graphene oxide (GO)/carbon nanotube (CNT) composite films are synthesized via facile vacuum filtration of hybrid dispersion. The flexible film is used as interlayer between separator and sulfur cathode to entrap active materials and prevent polysulfide shuttle. The lithium-sulfur (Li-S) battery furnished with an optimal GO/CNT interlayer delivers an excellent reversible capacity of 671 mA h/g after 300 cycles with a low degradation rate of 0.33 mA h/g or 0.043% per cycle at 0.2C. The encouraging outcome arises from synergistic effects of interlayer characteristics: Namely, (i) the porous structure facilitates easy ion transport and electrolyte penetration; (ii) the GO layers with oxygenated functional groups entrap active materials, preventing polysulfide shuttle and enhancing their recycling; and (iii) the highly conductive CNTs offer fast pathways for electron/ion transfer.",

author = "Huang, {Jian Qiu} and Xu, {Zheng Long} and Sara Abouali and {Akbari Garakani}, Mohammad and Kim, {Jang Kyo}",

note = "Funding Information: This project was financially supported by the Research Grants Council (GRF Projects: 613612 and 16212814 ) and the Innovation and Technology Commission (ITF Project code: ITS/318/14 ) of Hong Kong SAR. The authors also appreciate the technical assistance from the Materials Characterization and Preparation Facilities (MCPF) of HKUST. Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd. All rights reserved.",

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doi = "10.1016/j.carbon.2015.12.081",

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AU - Huang, Jian Qiu

AU - Xu, Zheng Long

AU - Abouali, Sara

AU - Akbari Garakani, Mohammad

AU - Kim, Jang Kyo

N1 - Funding Information: This project was financially supported by the Research Grants Council (GRF Projects: 613612 and 16212814 ) and the Innovation and Technology Commission (ITF Project code: ITS/318/14 ) of Hong Kong SAR. The authors also appreciate the technical assistance from the Materials Characterization and Preparation Facilities (MCPF) of HKUST. Publisher Copyright: © 2015 Elsevier Ltd. All rights reserved.

PY - 2016/4/1

Y1 - 2016/4/1

N2 - Highly porous, conductive graphene oxide (GO)/carbon nanotube (CNT) composite films are synthesized via facile vacuum filtration of hybrid dispersion. The flexible film is used as interlayer between separator and sulfur cathode to entrap active materials and prevent polysulfide shuttle. The lithium-sulfur (Li-S) battery furnished with an optimal GO/CNT interlayer delivers an excellent reversible capacity of 671 mA h/g after 300 cycles with a low degradation rate of 0.33 mA h/g or 0.043% per cycle at 0.2C. The encouraging outcome arises from synergistic effects of interlayer characteristics: Namely, (i) the porous structure facilitates easy ion transport and electrolyte penetration; (ii) the GO layers with oxygenated functional groups entrap active materials, preventing polysulfide shuttle and enhancing their recycling; and (iii) the highly conductive CNTs offer fast pathways for electron/ion transfer.

AB - Highly porous, conductive graphene oxide (GO)/carbon nanotube (CNT) composite films are synthesized via facile vacuum filtration of hybrid dispersion. The flexible film is used as interlayer between separator and sulfur cathode to entrap active materials and prevent polysulfide shuttle. The lithium-sulfur (Li-S) battery furnished with an optimal GO/CNT interlayer delivers an excellent reversible capacity of 671 mA h/g after 300 cycles with a low degradation rate of 0.33 mA h/g or 0.043% per cycle at 0.2C. The encouraging outcome arises from synergistic effects of interlayer characteristics: Namely, (i) the porous structure facilitates easy ion transport and electrolyte penetration; (ii) the GO layers with oxygenated functional groups entrap active materials, preventing polysulfide shuttle and enhancing their recycling; and (iii) the highly conductive CNTs offer fast pathways for electron/ion transfer.

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JO - Carbon

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ER -

Porous graphene oxide/carbon nanotube hybrid films as interlayer for lithium-sulfur batteries

Abstract

ASJC Scopus subject areas

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