4.8 Article

Effect of Boron-Doping on the Graphene Aerogel Used as Cathode for the Lithium Sulfur Battery

Journal

ACS APPLIED MATERIALS & INTERFACES
Volume 7, Issue 45, Pages 25202-25210

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b08129

Keywords

lithium-sulfur batteries; boron-doped graphene aerogel; porous structure; chemical adsorption; electrochemical performance

Funding

  1. Ningbo 3315 International Team of Advanced Energy Storage Materials
  2. Zhejiang Province Key Science and Technology Innovation Team [2013TD16]
  3. National Natural Science Foundation of China [51371186]
  4. Strategic Priority Research Program of Chinese Project Academy of Science [XDA09010201]

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A porous interconnected 3D boron-doped graphene aerogel (BGA) was prepared via a one-pot hydrothermal treatment. The BGA material was first loaded with sulfur to serve as cathode in lithiumsulfur batteries. Boron was positively polarized on the graphene framework, allowing for chemical adsorption of negative polysufide species. Compared with nitrogen-doped and undoped graphene aerogel, the BGA-S cathode could deliver a higher capacity of 994 mA h g(-1) at 0.2 C after 100 cycles, as well as an outstanding rate capability, which indicated the BGA was an ideal cathode material for lithiumsulfur batteries.

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