Promoted Lithium Polysulfides Conversion and Immobilization by Conductive Titanium oxynitride-Carbon Architecture Design toward Advanced Lithium-sulfur Batteries

Nanoscale ◽  
2021 ◽  
Author(s):  
Jing Guo ◽  
Hongyu Wang ◽  
Yuhong Luo ◽  
Hualiang An ◽  
Zisheng Zhang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Three Dimensional ◽  
Architecture Design ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Ordered Macroporous ◽  
Lithium Sulfur

In this work, a multifunctional deficient titanium oxynitride skeleton featured with Co-metal-decorated three-dimensional ordered macroporous (3DOM) structure and embedded with N-doped carbon nanotubes (Co@TiOxNy/N-CNTs) is fabricated as sulfur host in...

Carbon nanotubes-intercalated Co-N-C as a robust sulfur host for lithium-sulfur batteries

2020 ◽  
Vol 121 ◽  
pp. 110625 ◽  
Author(s):  
Beibei Liu ◽  
Kaili Fan ◽  
Junhua Li ◽  
Guiyu Liu ◽  
Youcai Liu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Lithium Sulfur

scholarly journals Three-Dimensionally Ordered Macroporous ZnO Framework as Dual-Functional Sulfur Host for High-Efficiency Lithium–Sulfur Batteries

Nanomaterials ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 2267
Author(s):  
Haisheng Han ◽  
Tong Wang ◽  
Yongguang Zhang ◽  
Arailym Nurpeissova ◽  
Zhumabay Bakenov
Keyword(s):  
High Efficiency ◽  
High Capacity ◽  
Active Surface ◽  
Active Surface Area ◽  
Shuttle Effect ◽  
Dual Functional ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Ordered Macroporous ◽  
Lithium Sulfur

A three-dimensionally ordered macroporous ZnO (3DOM ZnO) framework was synthesized by a template method to serve as a sulfur host for lithium–sulfur batteries. The unique 3DOM structure along with an increased active surface area promotes faster and better electrolyte penetration accelerating ion/mass transfer. Moreover, ZnO as a polar metal oxide has a strong adsorption capacity for polysulfides, which makes the 3DOM ZnO framework an ideal immobilization agent and catalyst to inhibit the polysulfides shuttle effect and promote the redox reactions kinetics. As a result of the stated advantages, the S/3DOM ZnO composite delivered a high initial capacity of 1110 mAh g−1 and maintained a capacity of 991 mAh g−1 after 100 cycles at 0.2 C as a cathode in a lithium–sulfur battery. Even at a high C-rate of 3 C, the S/3DOM ZnO composite still provided a high capacity of 651 mAh g−1, as well as a high areal capacity (4.47 mAh cm−2) under high loading (5 mg cm−2).

Shape-controlled MnO2 as a sulfur host for high performance lithium–sulfur batteries

2020 ◽  
Vol 44 (26) ◽  
pp. 11365-11372
Author(s):  
You Ge ◽  
Ping Chen ◽  
Wenjing Zhang ◽  
Qi Shan ◽  
Yanan Fang ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Network Structure ◽  
High Performance ◽  
Three Dimensional ◽  
Porous Network ◽  
Lithium Sulfur Batteries ◽  
One Step ◽  
Sulfur Host ◽  
Shape Controlled ◽  
Lithium Sulfur

The three-dimensional porous network structure self-assembled from birnessite-type MnO2 flakes and urchin-like structure composed of MnO2 nanotubes was fabricated by a convenient one-step hydrothermal method as the sulfur scaffold for high performance lithium–sulfur batteries.

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