Loading...
Please wait, while we are loading the content...
Similar Documents
Low temperature double-layer capacitors using asymmetric and spiro-type quaternary ammonium salts
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 2014 |
| Description | Double-layer capacitors capable of operating at extremely low temperatures (e.g., as low as -80.degree. C.) are disclosed. Electrolyte solutions combining a base solvent (e.g., acetonitrile) and a cosolvent are employed to lower the melting point of the base electrolyte. Example cosolvents include methyl formate, ethyl acetate, methyl acetate, propionitrile, butyronitrile, and 1,3-dioxolane. A quaternary ammonium salt including at least one of triethylmethylammonium tetrafluoroborate (TEMATFB) and spiro-(1,1')-bipyrrolidium tetrafluoroborate (SBPBF.sub.4), is used in an optimized concentration (e.g., 0.10 M to 0.75 M), dissolved into the electrolyte solution. Conventional device form factors and structural elements (e.g., porous carbon electrodes and a polyethylene separator) may be employed. |
| File Size | 1236018 |
| Page Count | 18 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20150003343 |
| Archival Resource Key | ark:/13960/t3xt0qb4c |
| Language | English |
| Publisher Date | 2014-08-12 |
| Access Restriction | Open |
| Subject Keyword | Electrodes Solvents Patents Ammonium Compounds Salts Porosity Electric Energy Storage Low Temperature Environments Melting Points Electrochemical Capacitors Operating Temperature Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Patent |
