Monodispersed Sulfur Nanoparticles for Lithium Sulfur Batteries with Theoretical Performance
Monodispersed Sulfur Nanoparticles for Lithium Sulfur Batteries with Theoretical Performance
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DOI：
10.1021/nl504963e
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发表时间：
2015-01-01
期刊：
影响因子：
10.8
通讯作者：
Chen, Liwei
中科院分区：
文献类型：
--
作者：
Chen, Hongwei;Wang, Changhong;Chen, Liwei
虽然LiS电池有望成为下一代高密度储能设备，但低硫利用率和低速率性能限制了其实际应用。在这里，我们报告的合成单分散的S-8纳米粒子（NP）具有不同的直径和相应的锂电池的纳米尺寸依赖的动力学特性。最值得注意的是，5 nm S NP显示出在0.1C倍率下1672 mAh g（-1）的理论放电/充电容量和在4C下1089 mAh g（-1）的放电容量。
While LiS batteries are poised to be the next generation high-density energy storage devices, low sulfur utilization and slow rate performance have limited their practical applications. Here, we report the synthesis of monodispersed S-8 nanoparticles (NPs) with different diameter and the nanosize dependent kinetic characteristics of the corresponding LiS batteries. Most remarkably, 5 nm S NPs display the theoretical discharging/charging capacity of 1672 mAh g(-1) at 0.1 C rate and a discharge capacity of 1089 mAh g(-1) at 4 C.