Enhancing the performance of lithium–sulfur batteries by anchoring polar polymers on the surface of sulfur host materials

2016 ◽  
Vol 4 (41) ◽  
pp. 16148-16156 ◽  
Author(s):  
Manfang Chen ◽  
Xianyou Wang ◽  
Siyu Cai ◽  
Zhongyun Ma ◽  
Peng Song ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Carbon Materials ◽  
Polar Polymers ◽  
Host Materials ◽  
Excellent Electrochemical Performance ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Triton X ◽  
Lithium Sulfur ◽  
Polar Polymer

Through anchoring polar polymer Triton X-100 on carbon materials, the MAC/S manifests excellent electrochemical performance as the cathode for Li–S batteries.

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.

Discarded cigarette filter-derived hierarchically porous carbon@graphene composites for lithium–sulfur batteries

2019 ◽  
Vol 7 (8) ◽  
pp. 3558-3562 ◽  
Author(s):  
Hongbin Xu ◽  
Yang Liu ◽  
Qianyun Bai ◽  
Renbing Wu
Keyword(s):  
Electrochemical Performance ◽  
Porous Carbon ◽  
Mesoporous Carbon ◽  
Cigarette Filter ◽  
Hierarchically Porous ◽  
Excellent Electrochemical Performance ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur ◽  
High Sulfur Loading

Trash to treasure: discarded cigarette filters have been utilized to fabricate hierarchical macro–micro–mesoporous carbon@graphene composites, which enable high sulfur loading and confine the dissolution of lithium polysulfides, and thus exhibit an excellent electrochemical performance in Li–S batteries.

Hydrothermal synthesis of porous TiO2 microspheres as an efficient sulfur host for enhanced lithium–sulfur batteries

2020 ◽  
Vol 10 (10) ◽  
pp. 1692-1696
Author(s):  
Haishen Song ◽  
Qiujuan Kuang ◽  
Hailiang Yuan ◽  
Hezhang Chen ◽  
Guorong Xu ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Coulombic Efficiency ◽  
Chemical Adsorption ◽  
Capacity Loss ◽  
Effective Contact ◽  
Excellent Electrochemical Performance ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Tio2 Microspheres ◽  
Lithium Sulfur

A porous TiO2 particle is synthesized and used as a sulfur host. The obtained TiO2 material provides a large number of pores that can accommodate sulfur, and the porous structure also enables effective contact between the host material and lithium polysulfides. The TiO2/S electrode shows excellent electrochemical performance, exhibiting a capacity loss of 0.17% per cycle and a Coulombic efficiency of 97.7% during cycling at 0.5 C. The appealing results are due to the porous characteristics of the TiO2 material and the chemical adsorption between the TiO2 and lithium polysulfides.

Rational design of exfoliated 1T MoS2@CNT-based bifunctional separators for lithium sulfur batteries

2017 ◽  
Vol 5 (45) ◽  
pp. 23909-23918 ◽  
Author(s):  
Y. C. Jeong ◽  
J. H. Kim ◽  
S. H. Kwon ◽  
J. Y. Oh ◽  
J. Park ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Rational Design ◽  
Tandem Configuration ◽  
Excellent Electrochemical Performance ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

1T exfoliated MoS2@CNT-based bifunctional separators in a tandem configuration delivered excellent electrochemical performance, and rational guidelines for preparing bifunctional separators for lithium sulfur batteries were suggested.

Multifunctional NiCo2O4 nanosheet-assembled hollow nanoflowers as a highly efficient sulfur host for lithium–sulfur batteries

2020 ◽  
Vol 49 (20) ◽  
pp. 6876-6883 ◽  
Author(s):  
Zhe Cui ◽  
Shu-Ang He ◽  
Qian Liu ◽  
Rujia Zou
Keyword(s):  
Catalytic Activity ◽  
Electrochemical Performance ◽  
Chemical Adsorption ◽  
Highly Efficient ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Lithium Sulfur

A facile method is reported to synthesize NCOHF/S for Li–S battery, exhibiting superior electrochemical performance due to its efficient bifunction catalytic activity, chemical adsorption and excellent conductivity.

Hollow polyaniline sphere@sulfur composites for prolonged cycling stability of lithium–sulfur batteries

2014 ◽  
Vol 2 (27) ◽  
pp. 10350-10354 ◽  
Author(s):  
Guoqiang Ma ◽  
Zhaoyin Wen ◽  
Jun Jin ◽  
Yan Lu ◽  
Xiangwei Wu ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Volume Expansion ◽  
Cycling Stability ◽  
Sulfur Cathode ◽  
Shuttle Effect ◽  
Excellent Electrochemical Performance ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Sulfur cathode with excellent electrochemical performance based on hollow PANI spheres, which can suppress the shuttle effect and buffer the volume expansion.

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...

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