3D Ferroconcrete-Like Aminated Carbon Nanotubes Network Anchoring Sulfur for Advanced Lithium–Sulfur Battery

Min Yan, Hao Chen, Yong Yu, Heng Zhao, Chao Fan Li, Zhi Yi Hu, Pan Wu, Lihua Chen, Hongen Wang, Dongliang Peng, Huanxin Gao, Tawfique Hasan, Yu Li, Bao Lian Su

Research output: Contribution to journalArticle

Abstract

To address the serious capacity fading in lithium–sulfur batteries, a 3D ferroconcrete-like aminated carbon nanotubes network with polyaniline coating as an effective sulfur host to contain polysulfide dissolution is presented here. In this composite, the cross-linked aminated carbon nanotubes framework provides a fast charge transport pathway and enhancement in the reaction kinetics of the active material to greatly improve the rate capability and sulfur utilization. The ethylenediamine moieties provide strong adhesion of polar discharge products to nonpolar carbon surfaces and thus efficiently prevent polysulfide dissolution to improve the cycle stability, confirmed by density functional theory calculations. The outside polyaniline layers structurally restrain polysulfides to prevent the shuttle effect and active material loss. Benefiting from these advantages, the synthesized composite exhibits a high initial capacity of 1215 mAh g−1 and a capacity of 975 mAh g−1 after 200 cycles at 0.2 C. Even after 200 cycles at 0.5 C, a capacity of 735 mAh g−1 can be maintained, among the best performance reported. The strategy in this work can shed some light on modifying nonpolar carbon surfaces via the amination process to chemically attach sulfur species for high-performance lithium–sulfur batteries.

LanguageEnglish
Article number1801066
JournalAdvanced Energy Materials
Volume8
Issue number25
DOIs
Publication statusPublished - 5 Sep 2018

Fingerprint

Polysulfides
Carbon Nanotubes
Sulfur
Carbon nanotubes
ethylenediamine
Polyaniline
Dissolution
Carbon
Amination
Composite materials
Reaction kinetics
Density functional theory
Charge transfer
Adhesion
Coatings
Lithium sulfur batteries
polysulfide
polyaniline

Keywords

  • carbon nanotubes
  • density functional theory
  • ethylenediamine modification
  • Li–S battery
  • polyaniline

Cite this

Yan, Min ; Chen, Hao ; Yu, Yong ; Zhao, Heng ; Li, Chao Fan ; Hu, Zhi Yi ; Wu, Pan ; Chen, Lihua ; Wang, Hongen ; Peng, Dongliang ; Gao, Huanxin ; Hasan, Tawfique ; Li, Yu ; Su, Bao Lian. / 3D Ferroconcrete-Like Aminated Carbon Nanotubes Network Anchoring Sulfur for Advanced Lithium–Sulfur Battery. In: Advanced Energy Materials. 2018 ; Vol. 8, No. 25.
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abstract = "To address the serious capacity fading in lithium–sulfur batteries, a 3D ferroconcrete-like aminated carbon nanotubes network with polyaniline coating as an effective sulfur host to contain polysulfide dissolution is presented here. In this composite, the cross-linked aminated carbon nanotubes framework provides a fast charge transport pathway and enhancement in the reaction kinetics of the active material to greatly improve the rate capability and sulfur utilization. The ethylenediamine moieties provide strong adhesion of polar discharge products to nonpolar carbon surfaces and thus efficiently prevent polysulfide dissolution to improve the cycle stability, confirmed by density functional theory calculations. The outside polyaniline layers structurally restrain polysulfides to prevent the shuttle effect and active material loss. Benefiting from these advantages, the synthesized composite exhibits a high initial capacity of 1215 mAh g−1 and a capacity of 975 mAh g−1 after 200 cycles at 0.2 C. Even after 200 cycles at 0.5 C, a capacity of 735 mAh g−1 can be maintained, among the best performance reported. The strategy in this work can shed some light on modifying nonpolar carbon surfaces via the amination process to chemically attach sulfur species for high-performance lithium–sulfur batteries.",
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3D Ferroconcrete-Like Aminated Carbon Nanotubes Network Anchoring Sulfur for Advanced Lithium–Sulfur Battery. / Yan, Min; Chen, Hao; Yu, Yong; Zhao, Heng; Li, Chao Fan; Hu, Zhi Yi; Wu, Pan; Chen, Lihua; Wang, Hongen; Peng, Dongliang; Gao, Huanxin; Hasan, Tawfique; Li, Yu; Su, Bao Lian.

In: Advanced Energy Materials, Vol. 8, No. 25, 1801066, 05.09.2018.

Research output: Contribution to journalArticle

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T1 - 3D Ferroconcrete-Like Aminated Carbon Nanotubes Network Anchoring Sulfur for Advanced Lithium–Sulfur Battery

AU - Yan, Min

AU - Chen, Hao

AU - Yu, Yong

AU - Zhao, Heng

AU - Li, Chao Fan

AU - Hu, Zhi Yi

AU - Wu, Pan

AU - Chen, Lihua

AU - Wang, Hongen

AU - Peng, Dongliang

AU - Gao, Huanxin

AU - Hasan, Tawfique

AU - Li, Yu

AU - Su, Bao Lian

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Y1 - 2018/9/5

N2 - To address the serious capacity fading in lithium–sulfur batteries, a 3D ferroconcrete-like aminated carbon nanotubes network with polyaniline coating as an effective sulfur host to contain polysulfide dissolution is presented here. In this composite, the cross-linked aminated carbon nanotubes framework provides a fast charge transport pathway and enhancement in the reaction kinetics of the active material to greatly improve the rate capability and sulfur utilization. The ethylenediamine moieties provide strong adhesion of polar discharge products to nonpolar carbon surfaces and thus efficiently prevent polysulfide dissolution to improve the cycle stability, confirmed by density functional theory calculations. The outside polyaniline layers structurally restrain polysulfides to prevent the shuttle effect and active material loss. Benefiting from these advantages, the synthesized composite exhibits a high initial capacity of 1215 mAh g−1 and a capacity of 975 mAh g−1 after 200 cycles at 0.2 C. Even after 200 cycles at 0.5 C, a capacity of 735 mAh g−1 can be maintained, among the best performance reported. The strategy in this work can shed some light on modifying nonpolar carbon surfaces via the amination process to chemically attach sulfur species for high-performance lithium–sulfur batteries.

AB - To address the serious capacity fading in lithium–sulfur batteries, a 3D ferroconcrete-like aminated carbon nanotubes network with polyaniline coating as an effective sulfur host to contain polysulfide dissolution is presented here. In this composite, the cross-linked aminated carbon nanotubes framework provides a fast charge transport pathway and enhancement in the reaction kinetics of the active material to greatly improve the rate capability and sulfur utilization. The ethylenediamine moieties provide strong adhesion of polar discharge products to nonpolar carbon surfaces and thus efficiently prevent polysulfide dissolution to improve the cycle stability, confirmed by density functional theory calculations. The outside polyaniline layers structurally restrain polysulfides to prevent the shuttle effect and active material loss. Benefiting from these advantages, the synthesized composite exhibits a high initial capacity of 1215 mAh g−1 and a capacity of 975 mAh g−1 after 200 cycles at 0.2 C. Even after 200 cycles at 0.5 C, a capacity of 735 mAh g−1 can be maintained, among the best performance reported. The strategy in this work can shed some light on modifying nonpolar carbon surfaces via the amination process to chemically attach sulfur species for high-performance lithium–sulfur batteries.

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KW - density functional theory

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