Ultrahigh Nitrogen-Doped Hollow Carbon Spheres with Hierarchical Pores for High-Reversibility Lithium-Sulfur Batteries

2021 ◽  
Author(s):  
Qingkai Zeng ◽  
Xiaolan Li ◽  
Jinliang Zhu ◽  
Guifang Wang ◽  
Xiyong Chen ◽  
...  
Keyword(s):  
Structural Design ◽  
Carbon Materials ◽  
High Specific Surface Area ◽  
Carbon Spheres ◽  
Hierarchical Pores ◽  
Host Materials ◽  
Lithium Sulfur Batteries ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres ◽  
Lithium Sulfur

Carbon materials are widely used as cathode host materials for lithium sulfur batteries due to their high specific surface area and high conductivity. Rational structural design can improve the sulfur...

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

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

ChemInform Abstract: Confining Sulfur in Double-Shelled Hollow Carbon Spheres for Lithium-Sulfur Batteries.

ChemInform ◽  
2013 ◽  
Vol 44 (2) ◽  
pp. no-no
Author(s):  
Chaofeng Zhang ◽  
Hao Bin Wu ◽  
Changzhou Yuan ◽  
Zaiping Guo ◽  
Xiong Wen Lou
Keyword(s):  
Carbon Spheres ◽  
Lithium Sulfur Batteries ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres ◽  
Lithium Sulfur

Hollow-in-hollow carbon spheres with hollow foam-like cores for lithium–sulfur batteries

Nano Research ◽  
2015 ◽  
Vol 8 (8) ◽  
pp. 2663-2675 ◽  
Author(s):  
Jun Zang ◽  
Taihua An ◽  
Yajie Dong ◽  
Xiaoliang Fang ◽  
Mingsen Zheng ◽  
...  
Keyword(s):  
Carbon Spheres ◽  
Lithium Sulfur Batteries ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres ◽  
Lithium Sulfur
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