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Reverse Microemulsion Synthesis of Sulfur/Graphene Composite for Lithium/Sulfur Batteries

Journal Article


Abstract


  • Due to its high theoretical capacity, high energy density, and easy availability, the lithium-sulfur (Li-S) system is considered to be the most promising candidate for electric and hybrid electric vehicle applications. Sulfur/carbon cathode in Li-S batteries still suffers, however, from low Coulombic efficiency and poor cycle life when sulfur loading and the ratio of sulfur to carbon are high. Here, we address these challenges by fabricating a sulfur/carboxylated-graphene composite using a reverse (water-in-oil) microemulsion technique. The fabricated sulfur-graphene composite cathode, which contains only 6 wt % graphene, can dramatically improve the cycling stability as well as provide high capacity. The electrochemical performance of the sulfur-graphene composite is further enhanced after loading into a three-dimensional heteroatom-doped (boron and nitrogen) carbon-cloth current collector. Even at high sulfur loading (8 mg/cm 2 ) on carbon cloth, this composite showed 1256 mAh/g discharge capacity with more than 99% capacity retention after 200 cycles.

Authors


  •   Kaiser, Mohammad R. (external author)
  •   Ma, Zhaohui (external author)
  •   Wang, Xiwen (external author)
  •   Han, Fudong (external author)
  •   Gao, Tao (external author)
  •   Fan, Xiulin (external author)
  •   Wang, Jiazhao
  •   Liu, Hua K.
  •   Dou, Shi Xue
  •   Wang, Chunsheng (external author)

Publication Date


  • 2017

Citation


  • Kaiser, M. Rejaul., Ma, Z., Wang, X., Han, F., Gao, T., Fan, X., Wang, J., Liu, H. Kun., Dou, S. & Wang, C. (2017). Reverse Microemulsion Synthesis of Sulfur/Graphene Composite for Lithium/Sulfur Batteries. ACS Nano, 11 (9), 9048-9056.

Scopus Eid


  • 2-s2.0-85029914453

Number Of Pages


  • 8

Start Page


  • 9048

End Page


  • 9056

Volume


  • 11

Issue


  • 9

Place Of Publication


  • United States

Abstract


  • Due to its high theoretical capacity, high energy density, and easy availability, the lithium-sulfur (Li-S) system is considered to be the most promising candidate for electric and hybrid electric vehicle applications. Sulfur/carbon cathode in Li-S batteries still suffers, however, from low Coulombic efficiency and poor cycle life when sulfur loading and the ratio of sulfur to carbon are high. Here, we address these challenges by fabricating a sulfur/carboxylated-graphene composite using a reverse (water-in-oil) microemulsion technique. The fabricated sulfur-graphene composite cathode, which contains only 6 wt % graphene, can dramatically improve the cycling stability as well as provide high capacity. The electrochemical performance of the sulfur-graphene composite is further enhanced after loading into a three-dimensional heteroatom-doped (boron and nitrogen) carbon-cloth current collector. Even at high sulfur loading (8 mg/cm 2 ) on carbon cloth, this composite showed 1256 mAh/g discharge capacity with more than 99% capacity retention after 200 cycles.

Authors


  •   Kaiser, Mohammad R. (external author)
  •   Ma, Zhaohui (external author)
  •   Wang, Xiwen (external author)
  •   Han, Fudong (external author)
  •   Gao, Tao (external author)
  •   Fan, Xiulin (external author)
  •   Wang, Jiazhao
  •   Liu, Hua K.
  •   Dou, Shi Xue
  •   Wang, Chunsheng (external author)

Publication Date


  • 2017

Citation


  • Kaiser, M. Rejaul., Ma, Z., Wang, X., Han, F., Gao, T., Fan, X., Wang, J., Liu, H. Kun., Dou, S. & Wang, C. (2017). Reverse Microemulsion Synthesis of Sulfur/Graphene Composite for Lithium/Sulfur Batteries. ACS Nano, 11 (9), 9048-9056.

Scopus Eid


  • 2-s2.0-85029914453

Number Of Pages


  • 8

Start Page


  • 9048

End Page


  • 9056

Volume


  • 11

Issue


  • 9

Place Of Publication


  • United States