@article{Wang2021, 
author = {Lei Wang and Shuangke Liu and Jin Hu and Xianan Zhang and Xin Li and Guanhua Zhang and Yujie Li and Chunman Zheng and Xiaobin Hong and Huigao Duan},
title = {Tailoring polysulfide trapping and kinetics by engineering hollow carbon bubble nanoreactors for high-energy Li-S pouch cells},
year = {2021},
journal = {Nano Research},
volume = {14},
number = {5},
pages = {1355-1363},
keywords = {hollow carbon bubble nanoreactors, ultrahigh pore volume, tunable wall thickness, high energy density, lithium-sulfur batteries},
url = {https://www.sciopen.com/article/10.1007/s12274-020-3181-2},
doi = {10.1007/s12274-020-3181-2},
abstract = {Despite great progress of lithium-sulfur (Li-S) battery performance at the laboratory-level, both key parameters and challenges at cell scales to achieve practical high energy density require high-sulfur-loading cathodes and lean electrolytes. Herein, a novel carbon foam integrated by hollow carbon bubble nanoreactors with ultrahigh pore volume of 6.9 cm3·g-1 is meticulously designed for ultrahigh sulfur content up to 96 wt.%. Tailoring polysulfide trapping and ion/electron transport kinetics during the charge-discharge process can be achieved by adjusting the wall thickness of hollow carbon bubbles. And a further in-depth understanding of electrochemical reaction mechanism for the cathode is impelled by the in-situ Raman spectroscopy. As a result, the as-prepared cathode delivers high specific capacitances of 1,269 and 695 mAh·g-1 at 0.1 and 5 C, respectively. Furthermore, Li-S pouch cells with high areal sulfur loading of 6.9 mg·cm-2 yield exceptional practical energy density of 382 Wh·kg-1 under lean electrolyte of 3.5 μL·mg-1, which demonstrates the great potential for realistic high-energy Li-S batteries.}
}