scholarly journals A highly efficient double-hierarchical sulfur host for advanced lithium–sulfur batteries

2018 ◽  
Vol 9 (3) ◽  
pp. 666-675 ◽  
Author(s):  
Linyu Hu ◽  
Chunlong Dai ◽  
Jin-Myoung Lim ◽  
Yuming Chen ◽  
Xin Lian ◽  
...  
Keyword(s):  
Building Blocks ◽  
Carbon Spheres ◽  
Ultrathin Nanosheets ◽  
Highly Efficient ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Hollow Carbon ◽  
Hierarchical Carbon ◽  
Lithium Sulfur

A double-hierarchical sulfur host has been synthesized in which hierarchical carbon spheres, constructed from building blocks of hollow carbon nanobubbles used for loading sulfur, are sealed by a polar MoS2 coating that is composed of ultrathin nanosheets (MoS2@HCS composite).

Functionalized N-doped hollow carbon spheres as sulfur host with enhanced electrochemical performances of lithium-sulfur batteries

Ionics ◽  
2018 ◽  
Vol 25 (2) ◽  
pp. 503-511 ◽  
Author(s):  
Xiaoping Li ◽  
Zhenghui Pan ◽  
Zihao Li ◽  
Yaotang Zhong ◽  
Xianshu Wang ◽  
...  
Keyword(s):  
Electrochemical Performances ◽  
Carbon Spheres ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres ◽  
Lithium Sulfur

Ferrous sulfide-assisted hollow carbon spheres as sulfur host for advanced lithium-sulfur batteries

2017 ◽  
Vol 326 ◽  
pp. 1040-1047 ◽  
Author(s):  
Weiwei Yang ◽  
Hao Zhao ◽  
Liang Chen ◽  
Chun Fang ◽  
Zhiyan Rui ◽  
...  
Keyword(s):  
Carbon Spheres ◽  
Ferrous Sulfide ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres ◽  
Lithium Sulfur

scholarly journals Mesoporous hollow carbon spheres for lithium–sulfur batteries: distribution of sulfur and electrochemical performance

2016 ◽  
Vol 7 ◽  
pp. 1229-1240 ◽  
Author(s):  
Anika C Juhl ◽  
Artur Schneider ◽  
Boris Ufer ◽  
Torsten Brezesinski ◽  
Jürgen Janek ◽  
...  
Keyword(s):  
High Vacuum ◽  
Cycling Performance ◽  
Carbon Spheres ◽  
X Ray Diffraction ◽  
Composite Cathodes ◽  
Lithium Sulfur Batteries ◽  
Cavity Filling ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres ◽  
Lithium Sulfur

Hollow carbon spheres (HCS) with a nanoporous shell are promising for the use in lithium–sulfur batteries because of the large internal void offering space for sulfur and polysulfide storage and confinement. However, there is an ongoing discussion whether the cavity is accessible for sulfur. Yet no valid proof of cavity filling has been presented, mostly due to application of unsuitable high-vacuum methods for the analysis of sulfur distribution. Here we describe the distribution of sulfur in hollow carbon spheres by powder X-ray diffraction and Raman spectroscopy along with results from scanning electron microscopy and nitrogen physisorption. The results of these methods lead to the conclusion that the cavity is not accessible for sulfur infiltration. Nevertheless, HCS/sulfur composite cathodes with areal sulfur loadings of 2.0 mg·cm−2 were investigated electrochemically, showing stable cycling performance with specific capacities of about 500 mAh·g−1 based on the mass of sulfur over 500 cycles.

Confining Sulfur in Double-Shelled Hollow Carbon Spheres for Lithium-Sulfur Batteries

2012 ◽  
Vol 124 (38) ◽  
pp. 9730-9733 ◽  
Author(s):  
Chaofeng Zhang ◽  
Hao Bin Wu ◽  
Changzhou Yuan ◽  
Zaiping Guo ◽  
Xiong Wen David Lou
Keyword(s):  
Carbon Spheres ◽  
Lithium Sulfur Batteries ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres ◽  
Lithium Sulfur
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