期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 18, 期 16, 页码 11104-11110出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6cp00512h
关键词
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资金
- National Basic Research Program of China [2012CB933402, 2013CB933001]
- Natural Science Foundation of China [51433005]
The microstructures and properties of the carbonaceous matrices in the cathodes of lithium-sulfur (Li-S) batteries have strong effects on their performances. We prepared a ternary composite cathode of mildly reduced less defective graphene oxide (mrLGO), sulfur, and carbon nanotubes (CNTs) by filtration for Li-S batteries. This battery showed a high initial specific capacity of 1219 mA h g(-1) at 0.2 C and a stable specific capacity of around 1000 mA h g(-1) after 200 cycles with a coulombic efficiency of 99%. Its excellent performance is mainly attributed to the good conductivity and residual oxygen containing groups of mrLGO, and the three-dimensional (3D) framework constructed using mrLGO sheets and CNTs.
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