Reversible electrodeposition device with ionic liquid electrolyte
US6552843B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2002 |
| Grant date | Apr 22, 2003 |
| Priority date | — |
| Expiry date | Jan 31, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1506
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention is a reversible electrodeposition optical modulation device employing an ionic liquid electrolyte, which is comprised of a mixture of an ionic organic compound and the salt of an electrodepositable metal. The solventless ionic liquid can contain very high concentrations of electrodepositable metal ions and provides the high current carrying capability needed for fast device switching. Switching uniformity is also significantly improved since the electrolyte resistance is at least an order of magnitude higher than that of typical solvent-based electrolytes. Fast switching and good cycle life for high quality mirror electrodeposits in reversible electrochemical mirror (REM) devices was demonstrated. Best results were obtained for novel silver halide electrolytes employing pyrrolidinium and N-methylpyrrolidinium cations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.