期刊
JOURNAL OF NANOPARTICLE RESEARCH
卷 17, 期 1, 页码 -出版社
SPRINGER
DOI: 10.1007/s11051-014-2789-0
关键词
Sulfur/graphene/carbon nanotube composite; Binder-free cathode; A hydrothermal co-assembling route; Lithium-sulfur battery; Energy storage
资金
- National Natural Science Foundation of China [21301140, 21061130551]
- Natural Science Foundation of Shaanxi Province [2012JQ6019, 2013JM2009]
- Xi'an Industrial Technology Innovation Project-technology transfer promoting program [CXY1438-7]
A novel sulfur/graphene/carbon nanotube (S/GN/CNT) composite was successfully prepared by a facile hydrothermal co-assembling route. When used as cathode for lithium-sulfur battery, the S/GN/CNT composite can be pressed directly onto nickel foam without binder and conductive additive, thereby simplifying the manufacturing process. The resulting S/GN/CNT composite exhibited high and stable-specific discharge capacities of 670 mAh g(-1) after 80 cycles at 0.2 C and good rate capability. This enhanced electrochemical performance could be attributed to the combinative effects of GN and CNT, which not only function as a flexible conductive matrix, favoring the ion transport and electrolyte diffusion, but also for provide a porous three-dimensional architecture with open channels to effectively confine the soluble polysulfides.
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