Three-Dimensional Porous Graphene Aerogel Cathode with High Sulfur Loading and Embedded TiO2 Nanoparticles for Advanced Lithium-Sulfur Batteries

Jian Qiu Huang; Zhenyu Wang; Zheng Long Xu; Woon Gie Chong; Xianying Qin; Xiangyu Wang; Jang Kyo Kim

doi:10.1021/acsami.6b10032

Three-Dimensional Porous Graphene Aerogel Cathode with High Sulfur Loading and Embedded TiO₂ Nanoparticles for Advanced Lithium-Sulfur Batteries

Jian Qiu Huang, Zhenyu Wang, Zheng Long Xu, Woon Gie Chong, Xianying Qin, Xiangyu Wang, Jang Kyo Kim (Corresponding Author)

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

101 Citations (Scopus)

Abstract

Three-dimensional graphene aerogel/TiO₂/sulfur (GA/TiO₂/S) composites are synthesized through a facile, one-pot hydrothermal route as the cathode for lithium-sulfur batteries. With a high sulfur content of 75.1 wt %, the conductive, highly porous composite electrode delivers a high discharge capacity of 512 mA h/g after 250 cycles at a current rate of 1 C with a low capacity decay of 0.128% per cycle. The excellent capacities and cyclic stability arise from several unique functional features of the cathode. (i) The conductive graphene aerogel framework ameliorates ion/electron transfer while accommodating the volume expansion induced during discharge, and (ii) TiO₂ nanoparticles play an important role in restricting the dissolution of polysulfides by chemical bonds with sulfur.

Original language	English
Pages (from-to)	28663-28670
Number of pages	8
Journal	ACS Applied Materials and Interfaces
Volume	8
Issue number	42
DOIs	https://doi.org/10.1021/acsami.6b10032
Publication status	Published - 26 Oct 2016
Externally published	Yes

Keywords

chemical interactions
graphene aerogel
hydrothermal synthesis
lithium-sulfur batteries
polysulfide adsorption
titanium dioxide

ASJC Scopus subject areas

General Materials Science

More information

10.1021/acsami.6b10032

Cite this

@article{1b7a8796418c48d49a9229342ea2038d,

title = "Three-Dimensional Porous Graphene Aerogel Cathode with High Sulfur Loading and Embedded TiO2 Nanoparticles for Advanced Lithium-Sulfur Batteries",

abstract = "Three-dimensional graphene aerogel/TiO2/sulfur (GA/TiO2/S) composites are synthesized through a facile, one-pot hydrothermal route as the cathode for lithium-sulfur batteries. With a high sulfur content of 75.1 wt %, the conductive, highly porous composite electrode delivers a high discharge capacity of 512 mA h/g after 250 cycles at a current rate of 1 C with a low capacity decay of 0.128% per cycle. The excellent capacities and cyclic stability arise from several unique functional features of the cathode. (i) The conductive graphene aerogel framework ameliorates ion/electron transfer while accommodating the volume expansion induced during discharge, and (ii) TiO2 nanoparticles play an important role in restricting the dissolution of polysulfides by chemical bonds with sulfur.",

keywords = "chemical interactions, graphene aerogel, hydrothermal synthesis, lithium-sulfur batteries, polysulfide adsorption, titanium dioxide",

author = "Huang, {Jian Qiu} and Zhenyu Wang and Xu, {Zheng Long} and Chong, {Woon Gie} and Xianying Qin and Xiangyu Wang and Kim, {Jang Kyo}",

note = "Publisher Copyright: {\textcopyright} 2016 American Chemical Society.",

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doi = "10.1021/acsami.6b10032",

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publisher = "American Chemical Society",

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Three-Dimensional Porous Graphene Aerogel Cathode with High Sulfur Loading and Embedded TiO₂ Nanoparticles for Advanced Lithium-Sulfur Batteries. / Huang, Jian Qiu; Wang, Zhenyu; Xu, Zheng Long et al.
In: ACS Applied Materials and Interfaces, Vol. 8, No. 42, 26.10.2016, p. 28663-28670.

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

TY - JOUR

T1 - Three-Dimensional Porous Graphene Aerogel Cathode with High Sulfur Loading and Embedded TiO2 Nanoparticles for Advanced Lithium-Sulfur Batteries

AU - Huang, Jian Qiu

AU - Wang, Zhenyu

AU - Xu, Zheng Long

AU - Chong, Woon Gie

AU - Qin, Xianying

AU - Wang, Xiangyu

AU - Kim, Jang Kyo

PY - 2016/10/26

Y1 - 2016/10/26

N2 - Three-dimensional graphene aerogel/TiO2/sulfur (GA/TiO2/S) composites are synthesized through a facile, one-pot hydrothermal route as the cathode for lithium-sulfur batteries. With a high sulfur content of 75.1 wt %, the conductive, highly porous composite electrode delivers a high discharge capacity of 512 mA h/g after 250 cycles at a current rate of 1 C with a low capacity decay of 0.128% per cycle. The excellent capacities and cyclic stability arise from several unique functional features of the cathode. (i) The conductive graphene aerogel framework ameliorates ion/electron transfer while accommodating the volume expansion induced during discharge, and (ii) TiO2 nanoparticles play an important role in restricting the dissolution of polysulfides by chemical bonds with sulfur.

AB - Three-dimensional graphene aerogel/TiO2/sulfur (GA/TiO2/S) composites are synthesized through a facile, one-pot hydrothermal route as the cathode for lithium-sulfur batteries. With a high sulfur content of 75.1 wt %, the conductive, highly porous composite electrode delivers a high discharge capacity of 512 mA h/g after 250 cycles at a current rate of 1 C with a low capacity decay of 0.128% per cycle. The excellent capacities and cyclic stability arise from several unique functional features of the cathode. (i) The conductive graphene aerogel framework ameliorates ion/electron transfer while accommodating the volume expansion induced during discharge, and (ii) TiO2 nanoparticles play an important role in restricting the dissolution of polysulfides by chemical bonds with sulfur.

KW - chemical interactions

KW - graphene aerogel

KW - hydrothermal synthesis

KW - lithium-sulfur batteries

KW - polysulfide adsorption

KW - titanium dioxide

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