@article{Sun2020, 
author = {Weiwei Sun and Yujie Li and Shuangke Liu and Qingpeng Guo and Yuhao Zhu and Xiaobin Hong and Chunman Zheng and Kai Xie},
title = {Catalytic Co9S8 decorated carbon nanoboxes as efficient cathode host for long-life lithium-sulfur batteries},
year = {2020},
journal = {Nano Research},
volume = {13},
number = {8},
pages = {2143-2148},
keywords = {catalyst, Li-S batteries, shuttle effect, Co9S8@C, cathode host},
url = {https://www.sciopen.com/article/10.1007/s12274-020-2821-x},
doi = {10.1007/s12274-020-2821-x},
abstract = {Lithium sulfur (Li-S) batteries with high specific capacity and energy density can bring enormous opportunities for the next-generation energy storage systems. However, the severe dissolution and shuttle effect of lithium polysulfides (LiPSs) is still the key issue that seriously impedes the development of practical Li-S batteries. Here, polar Co9S8 inlaid carbon nanoboxes (Co9S8@C NBs) have been investigated as cathode host for high-performance Li-S batteries. In this integrated structure, Co9S8 nanocrystals not only provide strong chemisorptive capability for polar LiPSs, but also act as a catalyst to accelerate polysulfide redox reactions; while carbon nanobox with large inner space can offer enough space to relieve the volume expansion and physically confine LiPSs’ dissolution. As a result, the S/Co9S8@C NBs cathode exhibits high specific capacity at 1C and the capacity retention was ~ 83% after 400 cycles, corresponding to an average decay rate of only ~ 0.043% per cycle.}
}