All-in-One Sulfur Host: Smart Controls of Architecture and Composition for Accelerated Liquid–Solid Redox Conversion in Lithium–Sulfur Batteries

2021 ◽  
Author(s):  
Bin Qin ◽  
Yifei Cai ◽  
Xiaoqing Si ◽  
Chun Li ◽  
Jian Cao ◽  
...  
Keyword(s):  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Redox Conversion ◽  
Lithium Sulfur

Dipolar and catalytic effects of an Fe3O4 based nitrogen-doped hollow carbon sphere framework for high performance lithium sulfur batteries

2021 ◽  
Author(s):  
Shungui Deng ◽  
Qihua Li ◽  
Yanhua Chen ◽  
Chao Wang ◽  
Hongbin Zhao ◽  
...  
Keyword(s):  
High Performance ◽  
High Catalytic Activity ◽  
Carbon Sphere ◽  
Hollow Carbon Sphere ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Hollow Carbon ◽  
Catalytic Effects ◽  
Redox Conversion ◽  
Lithium Sulfur

Well-designed hollow carbon sphere with embedded Fe3O4 nanoparticles is fabricated as sulfur host for Li–S batteries. The high catalytic activity of Fe3O4 can accelerate the redox conversion of polysulfide, facilitating the reaction kinetics.

Macroporous Multichannel Carbon Nanofibers Embedded with Co/Fe‐N Electrocatalyst as the Sulfur Host for Boosting Polysulfides Conversion in Lithium‐Sulfur Batteries

2021 ◽  
Vol 6 (24) ◽  
pp. 5932-5940
Author(s):  
Zhiliang Zhang ◽  
Jie Xu ◽  
Waqas Ahmed ◽  
Weiqiang Tang ◽  
Dongfang Niu ◽  
...  
Keyword(s):  
Carbon Nanofibers ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Lithium Sulfur

Porous TiO2−x with oxygen deficiency as sulfur host for lithium–sulfur batteries

2021 ◽  
pp. 2143004
Author(s):  
Yuman Yang ◽  
Yi Zhang ◽  
Meng Yang ◽  
Xiangyu Zhao
Keyword(s):  
Oxygen Deficiency ◽  
Reversible Capacity ◽  
Polar Compounds ◽  
High Specific Surface Area ◽  
Chemical Adsorption ◽  
Sulfur Species ◽  
Host Materials ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Lithium Sulfur

The dissolution and shuttle behavior of lithium polysulfides has been considered to be one of the serious problems restricting the development of lithium−sulfur (Li–S) batteries. Polar compounds are regarded as promising sulfur host materials due to their strong chemical adsorption to lithium polysulfides. Herein, polar TiO[Formula: see text] with porous structure is employed as the sulfur host, which has a high specific surface area and provides nanoconfined space for storage and adsorption of sulfur species. As a result, the as-prepared S@TiO[Formula: see text] cathode exhibits significantly enhanced reversible capacity, cycling stability, and reaction kinetics compared to those of the as-prepared S@TiO2 cathode.

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