Asymmetric Form of Redox Shuttle Based on 1,4-Di-tert-butyl-2,5-dimethoxybenzene

2013 ◽  
Vol 160 (10) ◽  
pp. A1711-A1715 ◽  
Author(s):  
Wei Weng ◽  
Yunting Tao ◽  
Zhengcheng Zhang ◽  
Paul C. Redfern ◽  
Larry A. Curtiss ◽  
...  
Keyword(s):  
Tert Butyl ◽  
Redox Shuttle ◽  
Asymmetric Form

Improving the Safety of Lithium-Ion Battery via a Redox Shuttle Additive 2,5-Di-tert-butyl-1,4-bis(2-methoxyethoxy)benzene (DBBB)

2018 ◽  
Vol 10 (11) ◽  
pp. 9216-9219 ◽  
Author(s):  
Olatz Leonet ◽  
Luis C. Colmenares ◽  
Andriy Kvasha ◽  
Mikel Oyarbide ◽  
Aroa R. Mainar ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
Lithium Ion ◽  
Tert Butyl ◽  
Redox Shuttle

Understanding the redox shuttle stability of 3,5-di-tert-butyl-1,2-dimethoxybenzene for overcharge protection of lithium-ion batteries

2010 ◽  
Vol 195 (15) ◽  
pp. 4957-4962 ◽  
Author(s):  
Zhengcheng Zhang ◽  
Lu Zhang ◽  
John A. Schlueter ◽  
Paul C. Redfern ◽  
Larry Curtiss ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Tert Butyl ◽  
Redox Shuttle ◽  
Overcharge Protection

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>

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