Functionalized Double Side Coated Separator for Lithium-Sulfur Batteries with Enhanced Cycle Life

2018 ◽  
Vol 165 (14) ◽  
pp. A3574-A3581 ◽  
Author(s):  
Maryam Sadat Kiai ◽  
Huseyin Kizil
Keyword(s):  
Cycle Life ◽  
Lithium Sulfur Batteries ◽  
Coated Separator ◽  
Lithium Sulfur

Interaction mechanism between a functionalized protective layer and dissolved polysulfide for extended cycle life of lithium sulfur batteries

2015 ◽  
Vol 3 (18) ◽  
pp. 9461-9467 ◽  
Author(s):  
Wook Ahn ◽  
Sung Nam Lim ◽  
Dong Un Lee ◽  
Kwang-Bum Kim ◽  
Zhongwei Chen ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Interaction Mechanism ◽  
Protective Layer ◽  
Cycle Life ◽  
Lithium Sulfur Batteries ◽  
Coated Separator ◽  
Extended Cycle ◽  
Lithium Sulfur

A sulfur–MWCNT composite battery containing a protective layer based on a MMT-coated separator was examined for its electrochemical properties.

Cellulose Separators with Integrated Carbon Nanotube Interlayers for Lithium-Sulfur Batteries: An Investigation into the Complex Interplay Between Cell Components

2019 ◽  
Author(s):  
Yu-Chuan Chien ◽  
Ruijun Pan ◽  
Ming-Tao Lee ◽  
Leif Nyholm ◽  
Daniel Brandell ◽  
...  
Keyword(s):  
Coulombic Efficiency ◽  
Solid Electrolyte Interphase ◽  
Holistic Approach ◽  
Cycle Life ◽  
Complex Interplay ◽  
Positive Electrodes ◽  
Lithium Sulfur Batteries ◽  
Cell Components ◽  
Redox Shuttle ◽  
Lithium Sulfur

This work aims to address two major roadblocks in the development of lithium-sulfur (Li-S) batteries: the inefficient deposition of Li on the metallic Li electrode and the parasitic "polysulfide redox shuttle". These roadblocks are here approached, respectively, by the combination of a cellulose separator with a cathode-facing conductive porous carbon interlayer, based on their previously reported individual benefits. The cellulose separator increases cycle life by 33%, and the interlayer by a further 25%, in test cells with positive electrodes with practically relevant specifications and a relatively low electrolyte/sulfur (E/S) ratio. Despite the prolonged cycle life, the combination of the interlayer and cellulose separator increases the polysulfide shuttle current, leading to reduced Coulombic efficiency. Based on XPS analyses, the latter is ascribed to a change in the composition of the solid electrolyte interphase (SEI) on Li. Meanwhile, electrolyte decomposition is found to be slower in cells with cellulose-based separators, which explains their longer cycle life. These counterintuitive observations demonstrate the complicated interactions between the cell components in the Li-S system and how strategies aiming to mitigate one unwanted process may exacerbate another. This study demonstrates the value of a holistic approach to the development of Li-S chemistry.<br>

Core-shell structured S@CuO/δ-MnO2 composites as cathodes for lithium-sulfur batteries

CrystEngComm ◽  
2021 ◽  
Author(s):  
Guiying Xu ◽  
Yongying Li ◽  
Hui Cheng ◽  
Guan Liu ◽  
Ziyang Yang ◽  
...  
Keyword(s):  
Coulombic Efficiency ◽  
Cycle Life ◽  
Core Shell ◽  
Practical Application ◽  
Short Cycle ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur ◽  
Capacity Decay

The dissolution of polysulfides (LiPSs) always leads to low Coulombic efficiency, dramatic capacity decay, and short cycle life, which hinders the practical application of lithium-sulfur (Li-S) batteries. In this study,...

Functional Mesoporous Carbon-Coated Separator for Long-Life, High-Energy Lithium-Sulfur Batteries

2015 ◽  
Vol 25 (33) ◽  
pp. 5285-5291 ◽  
Author(s):  
Juan Balach ◽  
Tony Jaumann ◽  
Markus Klose ◽  
Steffen Oswald ◽  
Jürgen Eckert ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
High Energy ◽  
Lithium Sulfur Batteries ◽  
Carbon Coated ◽  
Long Life ◽  
Coated Separator ◽  
Lithium Sulfur
Sign in / Sign up

Export Citation Format

Share Document