MWCNT porous microspheres with an efficient 3D conductive network for high performance lithium–sulfur batteries

2016 ◽  
Vol 4 (3) ◽  
pp. 775-780 ◽  
Author(s):  
Xiaomin Ye ◽  
Jie Ma ◽  
Yong-Sheng Hu ◽  
Huiying Wei ◽  
Fangfu Ye
Keyword(s):  
Carbon Nanotubes ◽  
High Performance ◽  
Conductive Network ◽  
Sulfur Cathode ◽  
Porous Microspheres ◽  
Lithium Sulfur Batteries ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Lithium Sulfur

A novel multi-walled carbon nanotubes microspheres were successfully prepared and applied to the sulfur cathode of lithium sulfur batteries.

scholarly journals Co-W Bimetallic Carbides as Sulfur Host for High-Performance Lithium–Sulfur Batteries

2021 ◽  
Author(s):  
Dongke Zhang ◽  
Ting Huang ◽  
Pengfei Zhao ◽  
Ze Zhang ◽  
Xingtao Qi ◽  
...  
Keyword(s):  
High Performance ◽  
Conductive Network ◽  
Rate Performance ◽  
Cycle Stability ◽  
Sulfur Cathode ◽  
Shuttle Effect ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Lithium Sulfur ◽  
Excellent Stability

Abstract Due to the low conductivity of sulfur and the dissolution of polysulfides, the research and application of lithium-sulfur (Li-S) batteries have encountered certain resistance. Increasing conductivity and introducing polarity into the sulfur host can effectively overcome these long-standing problems. Herein, We first prepared Co3W3C@ C@ CNTs / S material and used it in the cathode of lithium-sulfur batteries, The existence of carboxylated CNTs can form a conductive network, accelerate the transmission of electrons and improve the rate performance, and polar Co3W3C can form a strong interaction with polysulfide intermediates, effectively inhibiting its shuttle effect, improving the utilization of sulfur cathode electrodes, and improving the capacity and cycle stability. The Co3W3C@C@CNTs / S electrode material has a capacity of 1,093 mA h g-1 at a 0.1 A g− 1 and 482 mA h g-1 at 5 A g− 1. Even after 500 cycles of 2 A g− 1, the capacity of each cycle is only reduced by 0.08%. The excellent stability of this material can provide a new idea for the future development of lithium-sulfur batteries.

Hydroxylated carbon nanotube enhanced sulfur cathodes for improved electrochemical performance of lithium–sulfur batteries

2015 ◽  
Vol 51 (71) ◽  
pp. 13682-13685 ◽  
Author(s):  
Joo Hyun Kim ◽  
Kun Fu ◽  
Junghyun Choi ◽  
Seho Sun ◽  
Jeonghyun Kim ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Electrochemical Performance ◽  
Lithium Sulfur Batteries ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Sulfur Cathodes ◽  
Lithium Sulfur

Hydroxylated multi-walled carbon nanotubes were introduced into sulfur cathodes to utilize the hydrophilic attraction between the OH group and polysulfides as well as to increase the utilization of sulfur.

Enhanced sulfide chemisorption using boron and oxygen dually doped multi-walled carbon nanotubes for advanced lithium–sulfur batteries

2017 ◽  
Vol 5 (2) ◽  
pp. 632-640 ◽  
Author(s):  
Chengbin Jin ◽  
Wenkui Zhang ◽  
Zhenzhan Zhuang ◽  
Jianguo Wang ◽  
Hui Huang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Lithium Sulfur Batteries ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Lithium Sulfur

Boron and oxygen dual doping can improve the conductivity of MWNTs and enhance the chemisorption of sulfides in Li–S batteries.

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