Electrolytes including fluorinated solvents for use in electrochemical cells
Abstract
Provided are electrochemical cells and electrolytes used to build such cells. The electrolytes include ion-supplying salts and fluorinated solvents capable of maintaining single phase solutions with the salts 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 increase 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. Fluorinated salts, such as fluoroalkyl-substituted LiPF.sub.6, fluoroalkyl-substituted LiBF.sub.4 salts, linear and cyclic imide salts as well as methide salts including fluorinated alkyl groups, may be used due to their solubility in the fluorinated solvents. In some embodiments, the electrolyte may also include a flame retardant, such as a phosphazene or, more specifically, a cyclic 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:
- 1190870
- Patent Number(s):
- 9077046
- Application Number:
- 13/909,014
- Assignee:
- A123 Systems LLC (Waltham, MA)
- 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 03
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 30 DIRECT ENERGY CONVERSION; 36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Tikhonov, Konstantin, Yip, Ka Ki, and Lin, Tzu-Yuan. Electrolytes including fluorinated solvents for use in electrochemical cells. United States: N. p., 2015.
Web.
Tikhonov, Konstantin, Yip, Ka Ki, & Lin, Tzu-Yuan. Electrolytes including fluorinated solvents for use in electrochemical cells. United States.
Tikhonov, Konstantin, Yip, Ka Ki, and Lin, Tzu-Yuan. Tue .
"Electrolytes including fluorinated solvents for use in electrochemical cells". United States. https://www.osti.gov/servlets/purl/1190870.
@article{osti_1190870,
title = {Electrolytes including fluorinated solvents for use in electrochemical cells},
author = {Tikhonov, Konstantin and Yip, Ka Ki and Lin, Tzu-Yuan},
abstractNote = {Provided are electrochemical cells and electrolytes used to build such cells. The electrolytes include ion-supplying salts and fluorinated solvents capable of maintaining single phase solutions with the salts 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 increase 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. Fluorinated salts, such as fluoroalkyl-substituted LiPF.sub.6, fluoroalkyl-substituted LiBF.sub.4 salts, linear and cyclic imide salts as well as methide salts including fluorinated alkyl groups, may be used due to their solubility in the fluorinated solvents. In some embodiments, the electrolyte may also include a flame retardant, such as a phosphazene or, more specifically, a cyclic phosphazene and/or one or more ionic liquids.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {7}
}
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