Low molecular weight salts combined with fluorinated solvents for electrolytes
Provided are electrochemical cells and electrolytes used to build such cells. An electrolyte includes at least one salt having a molecular weight less than about 250. Such salts allow forming electrolytes with higher salt concentrations and ensure high conductivity and ion transport in these electrolytes. The low molecular weight salt may have a concentration of at least about 0.5M and may be combined with one or more other salts, such as linear and cyclic imide salts and/or methide salts. The concentration of these additional salts may be less than that of the low molecular weight salt, in some embodiments, twice less. The additional salts may have a molecular weight greater than about 250. The electrolyte may also include one or more fluorinated solvents and may be capable of maintaining single phase solutions at between about -30.degree. C. to about 80.degree. C.
- Research Organization:
- A123 Systems LLC, Waltham, MA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- SC0005117
- Assignee:
- A123 Systems LLC (Waltham, MA)
- Patent Number(s):
- 9,184,467
- Application Number:
- 13/910,098
- OSTI ID:
- 1344791
- Resource Relation:
- Patent File Date: 2013 Jun 04
- Country of Publication:
- United States
- Language:
- English
Similar Records
Electrolytes including fluorinated solvents for use in electrochemical cells
Fluoroalkyl containing salts combined with fluorinated solvents for electrolytes