Combinations of fluorinated solvents with imide salts or methide salts for electrolytes
Abstract
Provided are electrochemical cells and electrolytes used to build such cells. The electrolytes include imide salts and/or methide salts as well as fluorinated solvents capable of maintaining single phase solutions at between about -30.degree. C. to about 80.degree. C. The fluorinated solvents, such as fluorinated carbonates, fluorinated esters, and fluorinated esters, are less flammable than their non-fluorinated counterparts and improve safety characteristics of cells containing these solvents. The amount of fluorinated solvents in electrolytes may be between about 30% and 80% by weight not accounting weight of the salts. Linear and cyclic imide salts, such as LiN(SO.sub.2CF.sub.2CF.sub.3).sub.2, and LiN(SO.sub.2CF.sub.3).sub.2, as well as methide salts, such as LiC(SO.sub.2CF.sub.3).sub.3 and LiC(SO.sub.2CF.sub.2CF.sub.3).sub.3, may be used in these electrolytes. Fluorinated alkyl groups enhance solubility of these salts in the fluorinated solvents. In some embodiments, the electrolyte may also include a flame retardant, such as a phosphazene, and/or one or more ionic liquids.
- Inventors:
- Issue Date:
- Research Org.:
- A123 Systems, LLC , Waltham, MA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1225523
- Patent Number(s):
- 9184468
- Application Number:
- 13/910,105
- Assignee:
- A123 Systems LLC
- Patent Classifications (CPCs):
-
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- DOE Contract Number:
- SC0005117
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2013 Jun 04
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 30 DIRECT ENERGY CONVERSION
Citation Formats
Tikhonov, Konstantin, Yip, Ka Ki, Lin, Tzu-Yuan, Lei, Norman, Guerrero-Zavala, Guillermo, and Kwong, Kristie W. Combinations of fluorinated solvents with imide salts or methide salts for electrolytes. United States: N. p., 2015.
Web.
Tikhonov, Konstantin, Yip, Ka Ki, Lin, Tzu-Yuan, Lei, Norman, Guerrero-Zavala, Guillermo, & Kwong, Kristie W. Combinations of fluorinated solvents with imide salts or methide salts for electrolytes. United States.
Tikhonov, Konstantin, Yip, Ka Ki, Lin, Tzu-Yuan, Lei, Norman, Guerrero-Zavala, Guillermo, and Kwong, Kristie W. Tue .
"Combinations of fluorinated solvents with imide salts or methide salts for electrolytes". United States. https://www.osti.gov/servlets/purl/1225523.
@article{osti_1225523,
title = {Combinations of fluorinated solvents with imide salts or methide salts for electrolytes},
author = {Tikhonov, Konstantin and Yip, Ka Ki and Lin, Tzu-Yuan and Lei, Norman and Guerrero-Zavala, Guillermo and Kwong, Kristie W},
abstractNote = {Provided are electrochemical cells and electrolytes used to build such cells. The electrolytes include imide salts and/or methide salts as well as fluorinated solvents capable of maintaining single phase solutions at between about -30.degree. C. to about 80.degree. C. The fluorinated solvents, such as fluorinated carbonates, fluorinated esters, and fluorinated esters, are less flammable than their non-fluorinated counterparts and improve safety characteristics of cells containing these solvents. The amount of fluorinated solvents in electrolytes may be between about 30% and 80% by weight not accounting weight of the salts. Linear and cyclic imide salts, such as LiN(SO.sub.2CF.sub.2CF.sub.3).sub.2, and LiN(SO.sub.2CF.sub.3).sub.2, as well as methide salts, such as LiC(SO.sub.2CF.sub.3).sub.3 and LiC(SO.sub.2CF.sub.2CF.sub.3).sub.3, may be used in these electrolytes. Fluorinated alkyl groups enhance solubility of these salts in the fluorinated solvents. In some embodiments, the electrolyte may also include a flame retardant, such as a phosphazene, and/or one or more ionic liquids.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Nov 10 00:00:00 EST 2015},
month = {Tue Nov 10 00:00:00 EST 2015}
}
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