Suppression of polysulfide shuttling with a separator modified using spontaneously polarized bismuth ferrite for high performance lithium–sulfur batteries

2020 ◽  
Vol 8 (32) ◽  
pp. 16429-16436
Author(s):  
Hao Cheng ◽  
Huayun Liu ◽  
Han Jin ◽  
Ning Cai ◽  
Cheng Gao ◽  
...  
Keyword(s):  
Reaction Kinetics ◽  
High Performance ◽  
Bismuth Ferrite ◽  
Rate Performance ◽  
Cycle Stability ◽  
Lithium Sulfur Batteries ◽  
Anode Corrosion ◽  
Lithium Sulfur ◽  
Modified Separator

We report the suppression of polysulfide shuttling in a modified separator using spontaneously polarized BiFeO3 particles in a Li–S battery, with improved properties in terms of cycle stability, rate performance, reaction kinetics, self-discharge and anode corrosion.

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.

Enhanced rate capability and cycle stability of lithium–sulfur batteries with a bifunctional MCNT@PEG-modified separator

2015 ◽  
Vol 3 (13) ◽  
pp. 7139-7144 ◽  
Author(s):  
Guanchao Wang ◽  
Yanqing Lai ◽  
Zhian Zhang ◽  
Jie Li ◽  
Zhiyong Zhang
Keyword(s):  
Rate Capability ◽  
Cycle Stability ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur ◽  
Modified Separator

A MCNT@PEG composite is designed to modify the commercial separator of Li-S cells. With the MCNT@PEG-modified separator, Li-S cells possess enhanced rate capability and cycle stability.

High performance lithium-sulfur batteries with facile titanium nitride particles modified separator

2018 ◽  
Vol 215 ◽  
pp. 91-94 ◽  
Author(s):  
Xuan He ◽  
Yi Shuai ◽  
Li Na ◽  
Kanghua Chen ◽  
Youqiang Zhang ◽  
...  
Keyword(s):  
Titanium Nitride ◽  
High Performance ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur ◽  
Modified Separator

scholarly journals Construction of ultrathin MnO2 decorated graphene/carbon nanotube nanocomposites as efficient sulfur hosts for high-performance lithium–sulfur batteries

RSC Advances ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 6346-6355 ◽  
Author(s):  
Nan Wang ◽  
Sikan Peng ◽  
Xiang Chen ◽  
Jixian Wang ◽  
Chen Wang ◽  
...  
Keyword(s):  
High Performance ◽  
Cycling Performance ◽  
High Rate ◽  
Rate Performance ◽  
Lithium Sulfur Batteries ◽  
Sulfur Hosts ◽  
High Rate Performance ◽  
Nano Size ◽  
Lithium Sulfur

Ultrathin MnO2 nanosheets and nano size sulfur particles distributed uniformly on the surface of G/CNT hybrids, which exhibit high rate performance and long-term cycling performance.

Fabrication of a Light‐Weight Dual‐Function Modified Separator towards High‐Performance Lithium‐Sulfur Batteries

2019 ◽  
Vol 6 (14) ◽  
pp. 3648-3656 ◽  
Author(s):  
Ruowei Yi ◽  
Xiangfei Lin ◽  
Yinchao Zhao ◽  
Chenguang Liu ◽  
Yinqing Li ◽  
...  
Keyword(s):  
High Performance ◽  
Dual Function ◽  
Light Weight ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur ◽  
Modified Separator

scholarly journals High-Performance Lithium-Sulfur Batteries With an IPA/AC Modified Separator

2018 ◽  
Vol 6 ◽  
Author(s):  
Yafang Guo ◽  
Aihua Jiang ◽  
Zengren Tao ◽  
Zhiyun Yang ◽  
Yaping Zeng ◽  
...  
Keyword(s):  
High Performance ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur ◽  
Modified Separator

Oxidized multiwall carbon nanotube modified separator for high performance lithium–sulfur batteries with high sulfur loading

RSC Advances ◽  
2016 ◽  
Vol 6 (92) ◽  
pp. 89972-89978 ◽  
Author(s):  
Xing Cheng ◽  
Weikun Wang ◽  
Anbang Wang ◽  
Keguo Yuan ◽  
Zhaoqing Jin ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Electrochemical Performance ◽  
High Performance ◽  
Multiwall Carbon Nanotube ◽  
Lithium Sulfur Batteries ◽  
Sulfur Battery ◽  
Multiwall Carbon ◽  
Lithium Sulfur ◽  
High Sulfur Loading ◽  
Modified Separator

An oxidized multiwall carbon nanotube (o-MWCNT) coating (0.4 mg cm−2) for improving the electrochemical performance of lithium–sulfur battery with sulfur loading of 5.0 mg cm−2 ​has been presented.

Suppressing the dissolution of polysulfides with cosolvent fluorinated diether towards high-performance lithium sulfur batteries

2016 ◽  
Vol 18 (42) ◽  
pp. 29293-29299 ◽  
Author(s):  
Sui Gu ◽  
Rong Qian ◽  
Jun Jin ◽  
Qingsong Wang ◽  
Jing Guo ◽  
...  
Keyword(s):  
High Performance ◽  
Coulombic Efficiency ◽  
Lithium Sulfur Batteries ◽  
Anode Corrosion ◽  
Lithium Sulfur

The dissolution and shuttle of polysulfides in electrolytes cause severe anode corrosion, low coulombic efficiency, and a rapid fading of the capacity of lithium–sulfur batteries.

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