A pentafluorophenylboron oxalate additive in non-aqueous electrolytes for lithium batteries

被引：32
作者：
Li, L. F. [1 ]
Lee, H. S. [2 ]
Li, H. [1 ]
Yang, X. Q. [2 ]
Huang, X. J. [1 ]
机构：
[1] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
[2] Brookhaven Natl Lab, Upton, NY 11973 USA
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2009年 / 11卷 / 12期
关键词：
Pentafluorophenylboron oxalate; Boron-based anion receptors; Solid electrolyte interphase; Propylene carbonate; Lithium fluoride; Lithium oxide; Lithium peroxide; Non-aqueous electrolyte; ANION RECEPTOR; CAPACITY; SALT;
D O I：
10.1016/j.elecom.2009.10.015
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A novel compound named pentafluorophenyl boron oxalate (PFPBO) has been synthesized. PFPBO has a unique molecular structure containing a boron atom center with electron deficiency and an oxalate group. It is found that when PFPBO is used as additive, the solubility of lithium fluoride (LiF) or lithium oxide (Li2O, Li2O2) in propylene carbonate (PC) and dimethyl carbonate (DMC) solvents can be increased dramatically. The new electrolytes show high ionic conductivity, high lithium ion transference number and good compatibility with LiMn2O4 cathode and MCMB anode. PFPBO was synthesized with the designed structure to act as a bi-functional additive: boron-based anion receptor (BBAR) additive and stable solid electrolyte interphase (SEI) formation additive in PC-based electrolytes. The results show it does possess these two desired functionalities. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：2296 / 2299
页数：4
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