Yeast-Derived Carbon Nanotube-Coated Separator for High Performance Lithium-Sulfur Batteries
Yeast-Derived Carbon Nanotube-Coated Separator for High Performance Lithium-Sulfur Batteries
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DOI：
10.1007/s11837-021-04752-5
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发表时间：
2021-06
期刊：
影响因子：
2.6
通讯作者：
Jiajun He;Zan Gao;Xiaodong Li
中科院分区：
文献类型：
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作者：
Jiajun He;Zan Gao;Xiaodong Li
Lithium-sulfur (Li-S) battery is an appealing energy storage technology because of its superior theoretical energy density, natural friendliness and low cost over Li-ion battery. However, Li-S batteries often suffer from fast capacity decay, low energy density and short lifespan due to the shuttle effect from polysulfides. Hybridizing sulfur with carbonaceous materials has been demonstrated effective in solving these challenges and thus improving Li-S battery performance. In this work, yeast as a low-cost, natural and renewable catalyst was used to grow carbon nanotubes (CNTs), which were then coated on the separator in a Li-S battery to suppress the shuttle effect of polysulfides. The Li-S cell with the CNT-coated separator exhibited significantly improved performance at high current density with an initial high specific capacity of 980 mA h g−1and a well-retained specific capacity of ~ 450 mA h g−1after 850 cycles at a high current density.
