期刊
ACS APPLIED MATERIALS & INTERFACES
卷 7, 期 45, 页码 25202-25210出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b08129
关键词
lithium-sulfur batteries; boron-doped graphene aerogel; porous structure; chemical adsorption; electrochemical performance
资金
- Ningbo 3315 International Team of Advanced Energy Storage Materials
- Zhejiang Province Key Science and Technology Innovation Team [2013TD16]
- National Natural Science Foundation of China [51371186]
- Strategic Priority Research Program of Chinese Project Academy of Science [XDA09010201]
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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