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

被引：17

作者：

Weng, Wei ^{[1
]}

Tao, Yunting ^{[1
]}

Zhang, Zhengcheng ^{[1
]}

Redfern, Paul C. ^{[1
]}

Curtiss, Larry A. ^{[2
]}

Amine, Khalil ^{[1
]}

机构：

[1] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA

[2] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2013年 / 160卷 / 10期

关键词：

RECHARGEABLE LITHIUM BATTERIES; ELECTROCHEMICAL OVERCHARGE PROTECTION; ION BATTERIES; ADDITIVES; ELECTROLYTES; STABILITY; OXIDATION;

D O I：

10.1149/2.044310jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The concept of redox shuttles (RS) has been applied in lithium ion batteries for overcharge protection as well as catholytes for non-aqueous flow batteries. Stable RS compounds typically have a symmetric molecular structure with C2 v symmetry incorporating two identical alkoxy groups. We have successfully broken this symmetry by incorporating two non-identical alkoxy groups (-OMe and -OCH2CF3) on the parent 2,5-di-tert-butylbenzene structure. This asymmetric form of RS compound can survive more than 70 overcharge cycles for more than 1000 hours (100% overcharge, C/5 rate) at relatively low concentration of 0.1 M RS in 1.2M LiPF6 EC/EMC electrolyte for LiFePO4 /Li4Ti5O12 cell. (C) 2013 The Electrochemical Society. All rights reserved.

引用

页码：A1711 / A1715

页数：5

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