Fluorinated Aryl Sulfonimide Tagged (FAST) salts: modular synthesis and structure-property relationships for battery applications

被引：31

作者：

Huang, Mingjun ^{[1
]}

Feng, Shuting ^{[2
]}

Zhang, Wenxu ^{[1
]}

Giordano, Livia ^{[3
]}

Chen, Mao ^{[1
]}

Amanchukwu, Chibueze V. ^{[2
]}

Anandakathir, Robinson ^{[4
]}

Shao-Horn, Yang ^{[3
]}

Johnson, Jeremiah A. ^{[1
]}

机构：

[1] MIT, Dept Chem, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[2] MIT, Dept Chem Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[3] MIT, Dept Mech Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[4] SAIT, 3 Van De Graaff Dr, Burlington, MA 01803 USA

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2018年 / 11卷 / 05期

基金：

美国国家科学基金会;

关键词：

CONDUCTING POLYMER ELECTROLYTES; TRANSFERENCE NUMBER; LITHIUM; METAL; CHALLENGES; SOLVATION; LI-O-2; ELECTROCHEMISTRY; STABILITY; SOLVENTS;

D O I：

10.1039/c7ee03509h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Solid-state electrolytes are attracting great interest for their applications in potentially safe and stable high-capacity energy storage technologies. Lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) is widely used as a lithium ion source, especially in solid-state polymer electrolytes, due to its solubility and excellent chemical and electrochemical stability. Unfortunately, chemically inert LiTFSI cannot be easily modified to optimize its properties or allow for conjugation to other molecules, polymers, or substrates to prepare single-ion conducting polymer electrolytes. Chemical modifications of TFSI often erode its advantageous properties. Herein, we introduce Fluorinated Aryl Sulfonimide Tagged (FAST) salts, which are derived from successive nucleophilic aromatic substitution (SNAr) reactions. Experimental studies and density functional theory calculations were used to assess the electrochemical oxidative stabilities, chemical stabilities, and degrees of ion dissociation of FAST salts as a function of their structures. FAST salts offer a platform for accessing functional sulfonimides without sacrificing many of the advantageous properties of TFSI.

引用

页码：1326 / 1334

页数：9