3D pomegranate-like TiN@graphene composites with electrochemical reaction chambers as sulfur hosts for ultralong-life lithium–sulfur batteries

2019 ◽  
Vol 4 (2) ◽  
pp. 531-539 ◽  
Author(s):  
Rongjie Luo ◽  
Qiuhong Yu ◽  
Yang Lu ◽  
Mengjie Zhang ◽  
Tao Peng ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Electrochemical Reaction ◽  
Host Materials ◽  
Lithium Sulfur Batteries ◽  
Reaction Chambers ◽  
Sulfur Host ◽  
Sulfur Hosts ◽  
Lithium Sulfur

3D pomegranate-like TiN@graphene composites as novel sulfur host materials can effectively improve the electrochemical properties of Li–S systems.

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.

MgCo layered double hydroxide-based yolk shell polyhedrons as multifunctional sulfur mediator for lithium-sulfur batteries

2021 ◽  
Author(s):  
Kai Zhang ◽  
You Li ◽  
Hongyu Wang ◽  
Zisheng Zhang ◽  
Guihua Liu ◽  
...  
Keyword(s):  
Layered Double Hydroxide ◽  
High Discharge ◽  
Shuttle Effect ◽  
High Discharge Capacity ◽  
Host Materials ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Double Hydroxide ◽  
Areal Capacity ◽  
Lithium Sulfur

Abstract The development of efficient sulfur host materials to address the shuttle effect issues of lithium polysulfides (LiPSs) is crucial in the lithium-sulfur (Li-S) batteries, but still challenging. In the present study, a novel yolk shell structured MgCo-LDH/ZIF-67 composite is designed as Li-S battery cathode. In this composite, the shell layer is MgCo layered double hydroxide constructed by partially etching ZIF-67 nanoparticle by Mg2+, and the core is the unreacted ZIF-67 particle. The unique yolk shell structure not only provides abundant pores for sulfur accommodation, but also facilitates the electrolyte penetration and ion transport. The ZIF-67 core exhibits strong polar adsorption to LiPSs through the Lewis acid-base interactions, and the micropores/mesoporous can further trap LiPSs. Meanwhile, the MgCo-LDH shell exposes enough sulfur-philic sites for enhancing chemisorption and catalyzes the LiPSs conversion. As a result, when MgCo-LDH/ZIF-67 is used as sulfur host in the cathode, the cell achieves a high discharge capacity of 1121 mAh g-1 at 0.2 C, and an areal capacity of 5.0 mAh cm-2 under the high sulfur loading of 5.8 mg cm-2. The S/MgCo-LDH/ZIF-67 electrode holds a promising potential for the development of Li-S batteries.

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.

A graphene-like metallic cathode host for long-life and high-loading lithium–sulfur batteries

2016 ◽  
Vol 3 (2) ◽  
pp. 130-136 ◽  
Author(s):  
Quan Pang ◽  
Dipan Kundu ◽  
Linda F. Nazar
Keyword(s):  
High Performance ◽  
Electronic Conductivity ◽  
High Loading ◽  
Host Materials ◽  
High Electronic Conductivity ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Long Life ◽  
Lithium Sulfur

Nanostructured sulfur host materials that embrace both high electronic conductivity and strong chemisorption towards polysulfides are central to enable high performance Li–S batteries.

scholarly journals Rational designs and engineering of hollow micro-/nanostructures as sulfur hosts for advanced lithium–sulfur batteries

2016 ◽  
Vol 9 (10) ◽  
pp. 3061-3070 ◽  
Author(s):  
Zhen Li ◽  
Hao Bin Wu ◽  
Xiong Wen (David) Lou
Keyword(s):  
Sulfur Cathode ◽  
Host Materials ◽  
Hollow Nanostructures ◽  
Lithium Sulfur Batteries ◽  
Sulfur Hosts ◽  
Lithium Sulfur

Rationally designed hollow nanostructures are attractive host materials for the sulfur cathode in lithium–sulfur batteries.

Self-templated preparation of hollow mesoporous TiN microspheres as sulfur host materials for advanced lithium–sulfur batteries

2018 ◽  
Vol 53 (14) ◽  
pp. 10363-10371 ◽  
Author(s):  
Liang Chen ◽  
Weiwei Yang ◽  
Hao Zhang ◽  
Jianguo Liu ◽  
Yong Zhou
Keyword(s):  
Host Materials ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Lithium Sulfur
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