Sandwich Structured S/Graphene/CNTs Cathode Material for High Energy Li-S Batteries

Yizhou Wu; Daobin Mu; Borong Wu; Ying Jiang; Yin Ding; Beiyuan Liu; Zhikun Zhao; Guchang Yang; Yanhua Cui

doi:10.15918/j.jbit1004-0579.201726.S119

Sandwich Structured S/Graphene/CNTs Cathode Material for High Energy Li-S Batteries

Yizhou Wu
, Daobin Mu^*
, Borong Wu
, Ying Jiang
, Yin Ding
, Beiyuan Liu
, Zhikun Zhao
, Guchang Yang
, Yanhua Cui

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology
China Academy of Engineering Physics

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

Abstract

A novel carbon/sulfur composite (S/rGC7) with sandwich structure has been synthesized by solvothermal treatment to serve as the cathode for lithium sulfur batteries. The carbon matrix consists of graphene and multi-walled carbon nanotubes. The three dimensional composite may suppress polysulfide shuttle effect, relieve volume expansion of sulfur and improve the conductivity. With this strategy, a high sulfur content (up to 75wt%) Li-S battery cathode is gained. It reaches the specific capacity of 1 124.9 mAh•g^-1 in the first cycle and maintains stable specific capacities up to 647.7 mAh•g^-1 after 200 cycles at 0.2C. The work provides a facile way to modify the S-contained cathode for high energy Li-S batteries.

Original language	English
Pages (from-to)	134-139
Number of pages	6
Journal	Journal of Beijing Institute of Technology (English Edition)
Volume	26
DOIs	https://doi.org/10.15918/j.jbit1004-0579.201726.S119
Publication status	Published - 1 Dec 2017

Keywords

Cathode
Graphene
High sulfur content
Lithium-sulfur battery
Sandwich structure

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10.15918/j.jbit1004-0579.201726.S119

Cite this

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title = "Sandwich Structured S/Graphene/CNTs Cathode Material for High Energy Li-S Batteries",

abstract = "A novel carbon/sulfur composite (S/rGC7) with sandwich structure has been synthesized by solvothermal treatment to serve as the cathode for lithium sulfur batteries. The carbon matrix consists of graphene and multi-walled carbon nanotubes. The three dimensional composite may suppress polysulfide shuttle effect, relieve volume expansion of sulfur and improve the conductivity. With this strategy, a high sulfur content (up to 75wt\%) Li-S battery cathode is gained. It reaches the specific capacity of 1 124.9 mAh•g-1 in the first cycle and maintains stable specific capacities up to 647.7 mAh•g-1 after 200 cycles at 0.2C. The work provides a facile way to modify the S-contained cathode for high energy Li-S batteries.",

keywords = "Cathode, Graphene, High sulfur content, Lithium-sulfur battery, Sandwich structure",

author = "Yizhou Wu and Daobin Mu and Borong Wu and Ying Jiang and Yin Ding and Beiyuan Liu and Zhikun Zhao and Guchang Yang and Yanhua Cui",

note = "Publisher Copyright: {\textcopyright} 2017 Editorial Department of Journal of Beijing Institute of Technology.",

year = "2017",

month = dec,

day = "1",

doi = "10.15918/j.jbit1004-0579.201726.S119",

language = "English",

volume = "26",

pages = "134--139",

journal = "Journal of Beijing Institute of Technology (English Edition)",

issn = "1004-0579",

publisher = "Beijing Institute of Technology",

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TY - JOUR

T1 - Sandwich Structured S/Graphene/CNTs Cathode Material for High Energy Li-S Batteries

AU - Wu, Yizhou

AU - Mu, Daobin

AU - Wu, Borong

AU - Jiang, Ying

AU - Ding, Yin

AU - Liu, Beiyuan

AU - Zhao, Zhikun

AU - Yang, Guchang

AU - Cui, Yanhua

PY - 2017/12/1

Y1 - 2017/12/1

N2 - A novel carbon/sulfur composite (S/rGC7) with sandwich structure has been synthesized by solvothermal treatment to serve as the cathode for lithium sulfur batteries. The carbon matrix consists of graphene and multi-walled carbon nanotubes. The three dimensional composite may suppress polysulfide shuttle effect, relieve volume expansion of sulfur and improve the conductivity. With this strategy, a high sulfur content (up to 75wt%) Li-S battery cathode is gained. It reaches the specific capacity of 1 124.9 mAh•g-1 in the first cycle and maintains stable specific capacities up to 647.7 mAh•g-1 after 200 cycles at 0.2C. The work provides a facile way to modify the S-contained cathode for high energy Li-S batteries.

AB - A novel carbon/sulfur composite (S/rGC7) with sandwich structure has been synthesized by solvothermal treatment to serve as the cathode for lithium sulfur batteries. The carbon matrix consists of graphene and multi-walled carbon nanotubes. The three dimensional composite may suppress polysulfide shuttle effect, relieve volume expansion of sulfur and improve the conductivity. With this strategy, a high sulfur content (up to 75wt%) Li-S battery cathode is gained. It reaches the specific capacity of 1 124.9 mAh•g-1 in the first cycle and maintains stable specific capacities up to 647.7 mAh•g-1 after 200 cycles at 0.2C. The work provides a facile way to modify the S-contained cathode for high energy Li-S batteries.

KW - Cathode

KW - Graphene

KW - High sulfur content

KW - Lithium-sulfur battery

KW - Sandwich structure

UR - https://www.scopus.com/pages/publications/85054885047

U2 - 10.15918/j.jbit1004-0579.201726.S119

DO - 10.15918/j.jbit1004-0579.201726.S119

M3 - Article

AN - SCOPUS:85054885047

SN - 1004-0579

VL - 26

SP - 134

EP - 139

JO - Journal of Beijing Institute of Technology (English Edition)

JF - Journal of Beijing Institute of Technology (English Edition)

ER -

Sandwich Structured S/Graphene/CNTs Cathode Material for High Energy Li-S Batteries

Abstract

Keywords

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