High voltage window electrolyte for supercapacitors
Abstract
A supercapacitor according to the present invention includes a negative carbon-comprising electrode which does not intercalate sodium, and a positive carbon-comprising electrode. An electrolyte composition comprises sodium hexafluorophosphate and a non-aqueous solvent comprising at least one selected from the group consisting of ethylene glycol dimethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, and tetraethylene glycol dimethyl ether. The supercapacitor has an electrochemical voltage window of from +0.0 V to 3.5 V (full cell voltage). The electrolyte has an electrochemical voltage window of from +0.05 V to 3.9 V vs. Na/Na+. A method of making and a method of operating a supercapacitor is also disclosed.
- Inventors:
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1650953
- Patent Number(s):
- 10665396
- Application Number:
- 16/746,503
- Assignee:
- UT-Battelle, LLC (Oak Ridge, TN)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01G - CAPACITORS
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:
- AC05-00OR22725
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 01/17/2020
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 25 ENERGY STORAGE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Ruther, Rose E., Delnick, Frank M., and Nanda, Jagjit. High voltage window electrolyte for supercapacitors. United States: N. p., 2020.
Web.
Ruther, Rose E., Delnick, Frank M., & Nanda, Jagjit. High voltage window electrolyte for supercapacitors. United States.
Ruther, Rose E., Delnick, Frank M., and Nanda, Jagjit. Tue .
"High voltage window electrolyte for supercapacitors". United States. https://www.osti.gov/servlets/purl/1650953.
@article{osti_1650953,
title = {High voltage window electrolyte for supercapacitors},
author = {Ruther, Rose E. and Delnick, Frank M. and Nanda, Jagjit},
abstractNote = {A supercapacitor according to the present invention includes a negative carbon-comprising electrode which does not intercalate sodium, and a positive carbon-comprising electrode. An electrolyte composition comprises sodium hexafluorophosphate and a non-aqueous solvent comprising at least one selected from the group consisting of ethylene glycol dimethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, and tetraethylene glycol dimethyl ether. The supercapacitor has an electrochemical voltage window of from +0.0 V to 3.5 V (full cell voltage). The electrolyte has an electrochemical voltage window of from +0.05 V to 3.9 V vs. Na/Na+. A method of making and a method of operating a supercapacitor is also disclosed.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 26 00:00:00 EDT 2020},
month = {Tue May 26 00:00:00 EDT 2020}
}
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