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.

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.

“Pea-pod-like” nitrogen-doped hollow porous carbon cathode hosts decorated with polar titanium dioxide nanocrystals as efficient polysulfide reservoirs for advanced lithium–sulfur batteries

2018 ◽  
Vol 6 (37) ◽  
pp. 18191-18205 ◽  
Author(s):  
Weiqi Yao ◽  
Chenjie Chu ◽  
Weizhong Zheng ◽  
Liang Zhan ◽  
Yanli Wang
Keyword(s):  
Titanium Dioxide ◽  
Porous Carbon ◽  
High Capacity ◽  
Rate Capability ◽  
Cycle Stability ◽  
Nitrogen Doped ◽  
Lithium Sulfur Batteries ◽  
Pea Pod ◽  
Lithium Sulfur

The peculiar “pea-pod-like” rod-TiO2@C/S cathodes deliver high capacity, superior rate capability and long-term cycle stability.

Sulfur–hydrazine hydrate-based chemical synthesis of sulfur@graphene composite for lithium–sulfur batteries

2018 ◽  
Vol 5 (4) ◽  
pp. 785-792 ◽  
Author(s):  
Jianmei Han ◽  
Baojuan Xi ◽  
Zhenyu Feng ◽  
Xiaojian Ma ◽  
Junhao Zhang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Chemical Synthesis ◽  
Hydrazine Hydrate ◽  
Rate Capability ◽  
Graphene Composite ◽  
Reduced Graphene ◽  
Lithium Sulfur Batteries ◽  
Good Rate Capability ◽  
Lithium Sulfur ◽  
Excellent Stability

A sulfur–hydrazine hydrate chemistry-based method is reported here to integrate the sulfur and N-doped reduced graphene oxide to obtain S@N-rGO composite with 76% sulfur. The as-obtained S@N-rGO composite displays a good rate capability and excellent stability.

Fast Polysulfides Catalytic Conversion and Self-Repairing Ability for High Loading Lithium-Sulfur Batteries using a Permselective Coating Layer Modified Separator

Nanoscale ◽  
2021 ◽  
Author(s):  
Fanglei Zeng ◽  
Fang Wang ◽  
Ning Li ◽  
Ke Meng Song ◽  
Shi-Ye Chang ◽  
...  
Keyword(s):  
Energy Density ◽  
Coating Layer ◽  
High Energy ◽  
High Energy Density ◽  
High Loading ◽  
Battery System ◽  
Shuttle Effect ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur ◽  
Modified Separator

Li-S battery is considered as one of the most promising battery system because of its large theoretical capacity and high energy density. However, the “shuttle effect” of soluble polysulfides and...

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.

Ultrastable lithium–sulfur batteries with outstanding rate capability boosted by NiAs-type vanadium sulfides

2020 ◽  
Vol 8 (35) ◽  
pp. 18358-18366
Author(s):  
Chao Yue Zhang ◽  
Guo Wen Sun ◽  
Yun Fei Bai ◽  
Zhe Dai ◽  
Yi Rong Zhao ◽  
...  
Keyword(s):  
High Performance ◽  
Rate Capability ◽  
Lithium Sulfur Batteries ◽  
Vanadium Sulfide ◽  
New Type ◽  
Nias Type ◽  
Lithium Sulfur

A new type of vanadium sulfide (V2S3) was used for high-performance lithium–sulfur batteries.

An Electronegative Modified Separator with Semifused Pores as a Selective Barrier for Highly Stable Lithium–Sulfur Batteries

2019 ◽  
Vol 58 (31) ◽  
pp. 14538-14547 ◽  
Author(s):  
Junxiao Wang ◽  
Mengjia Li ◽  
Chong Liu ◽  
Yong Liu ◽  
Tongkun Zhao ◽  
...  
Keyword(s):  
Lithium Sulfur Batteries ◽  
Lithium Sulfur ◽  
Modified Separator
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