@article{Zang2015, 
author = {Jun Zang and Taihua An and Yajie Dong and Xiaoliang Fang and Mingsen Zheng and Quanfeng Dong and Nanfeng Zheng},
title = {Hollow-in-hollow carbon spheres with hollow foam-like cores for lithium–sulfur batteries},
year = {2015},
journal = {Nano Research},
volume = {8},
number = {8},
pages = {2663-2675},
keywords = {hollow spheres, porous carbon, sulfur/carbon cathode, lithium–sulfur batteries},
url = {https://www.sciopen.com/article/10.1007/s12274-015-0773-3},
doi = {10.1007/s12274-015-0773-3},
abstract = {Lithium-sulfur batteries have attracted increasing attention because of their high theoretical capacity. Using sulfur/carbon composites as the cathode materials has been demonstrated as an effective strategy to optimize sulfur utilization and enhance cycle stability as well. In this work, hollow-in-hollow carbon spheres with hollow foam-like cores (HCSF@C) are prepared to improve both capability and cycling stability of lithium–sulfur batteries. With high surface area and large pore volumes, the loading of sulfur in HCSF@C reaches up to 70 wt.%. In the resulting S/HCSF@C composites, the outer carbon shell serves as an effective protection layer to trap the soluble polysulfide intermediates derived from the inner component. Consequently, the S/HCSF@C cathode retains a high capacity of 780 mAh/g after 300 cycles at a high charge/discharge rate of 1 A/g.}
}