Loading...
Please wait, while we are loading the content...
Similar Documents
Room-temperature-cured copolymers for lithium battery gel electrolytes
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Meador, Mary Ann B. Tigelaar, Dean M. |
| Copyright Year | 2009 |
| Description | Polyimide-PEO copolymers (PEO signifies polyethylene oxide) that have branched rod-coil molecular structures and that can be cured into film form at room temperature have been invented for use as gel electrolytes for lithium-ion electric-power cells. These copolymers offer an alternative to previously patented branched rod-coil polyimides that have been considered for use as polymer electrolytes and that must be cured at a temperature of 200 C. In order to obtain sufficient conductivity for lithium ions in practical applications at and below room temperature, it is necessary to imbibe such a polymer with a suitable carbonate solvent or ionic liquid, but the high-temperature cure makes it impossible to incorporate and retain such a liquid within the polymer molecular framework. By eliminating the high-temperature cure, the present invention makes it possible to incorporate the required liquid. |
| File Size | 162136 |
| Page Count | 2 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20090020544 |
| Archival Resource Key | ark:/13960/t39073q92 |
| Language | English |
| Publisher Date | 2009-05-01 |
| Access Restriction | Open |
| Subject Keyword | Composite Materials Oligomers Polyethylenes Solvents Copolymers Gels Molecular Structure Lithium Batteries Oxides Electrolytes Carbonates Room Temperature Metal Ions Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
