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Electrolytes for electrooptic devices comprising ionic liquids

A technology of ionic liquid solvent and electrolyte solution, which is applied in the field of electrolyte used in electro-optical devices containing ionic liquids, can solve the problems of poor electrochemical stability, high volatility, and no specific details of electrolyte components, etc.

Inactive Publication Date: 2005-09-21
LOS ALAMOS NATIONAL SECURITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High dielectric solvents commonly used in existing devices suffer from one or more of the following deficiencies: high volatility, high sensitivity to humidity, hydrophilicity, poor electrochemical stability, high chemical activity, and susceptibility to degradation by light (usually degraded by UV light)
These documents and patents describe the use of ionic liquids in electrolytes, but do not give specific details on the composition of the electrolyte and the characteristics of electrochromic devices using these ionic liquids

Method used

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  • Electrolytes for electrooptic devices comprising ionic liquids
  • Electrolytes for electrooptic devices comprising ionic liquids
  • Electrolytes for electrooptic devices comprising ionic liquids

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0168] Example 1: Absorption Spectrum of UV Stabilizer in Ionic Liquid Solvent

[0169] After determination, propylene carbonate, 1-butyl-3-methylimidazole bis(trifluoromethylsulfonyl)imide, N-butyl-N-methylpyrroline bis(trifluoromethylsulfonyl) Imine and N-butyl-N-methylpyrrole with 1% UV stabilizer Uvinul 3035 (diphenyl ethyl 2-cyano-3,3-propenoate, BASF, Mount olive, NJ) The absorption spectrum of the morphine bis(trifluoromethylsulfonyl)imide solution is between 250 and 800 nanometers. Both 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide and N-butyl-N-methylpyrroline bis(trifluoromethylsulfonyl)imide are useful in the present invention Ionic liquid solvent. 1-Butyl-3-methylimidazole bis(trifluoromethylsulfonyl)imide has better absorption of ultraviolet light (wavelength below 400 nm) than N-butyl-N due to its higher conjugation -Methylpyrroline bis(trifluoromethylsulfonyl)imide. The solution formed by 1-butyl-3-methylimidazolium bis(trifluoromethylsulfo...

example 2

[0170] Example 2: Electrochromic Window Device with Electrolyte Solution Containing Redox Dye

[0171] The ITO substrate was cut into two 5.25 inch by 3.7 inch rectangles. Drill two holes about 3mm in diameter near the opposite corners of the rectangle. The substrates are then washed, dried and stored in a clean room. Sprinkle 105 micron glass beads containing epoxy substances around the first substrate, and place the second substrate on top of the first substrate so that a cavity is formed between the two substrates, with the centers of the two substrates at It is slightly staggered in the direction of its long side. In this way, the exposed sides of the two substrates can be used to place bus bars and make conductive connections. The epoxy sealant is cured at 120°C. The cavity is filled with a liquid electrolyte solution at room temperature; the liquid electrolyte solution contains a 0.015M charge transfer complex composed of bis(trifluoromethyl) dissolved in 1-butyl-3...

example 3

[0172] Example 3: Electrochromic window unit with tungsten oxide coating

[0173] Prepare two ITO substrates according to the method described in example 2, difference is that the substrate in this example does not carry out drilling, and the tungsten oxide layer (on conductive side) of one deck 300 nanometers thick is covered on the substrate, this The layer of tungsten oxide contained lithium oxide (based on tungsten atoms) at a molar fraction of 30%. This overburden is formed by the wet chemical enrichment process described in US Patent No. 6,266,177. Other methods, such as chemical vapor deposition and physical vapor deposition, can also be used to form this layer of tungsten oxide on the substrate. This layer of tungsten oxide is baked at 135°C in a humid environment, and then fired at 250°C in air. The substrates were then fabricated into device units by the procedure described in Example 1. The thickness of the cavity is 175 microns. The cavity is filled with elec...

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Abstract

This paper relates to soluble bifunctional redox agent electrolyte solutions in the form of molten salt solvents, which can be used to fabricate electro-optic devices with better stability to ultraviolet radiation. The solvent contains lithium ions or quaternary ammonium cations and perfluorinated sulfonimide anions, wherein the perfluorinated sulfonimide anions are selected from: trifluoromethanesulfonate anion (CF 3 SO 3 － ), bis(trifluoromethylsulfonyl)imide anion ((CF 3 SO 2 ) 2 N － ), bis(perfluoroethylsulfonyl)imide anion ((CF 3 CF 2 SO 2 ) 2 N － ) and tris(trifluoromethylsulfonyl)methane anion ((CF 3 SO 2 ) 3 C － ).

Description

[0001] Statement of Federal Government Rights [0002] This invention was made with support under US Department of Energy Contract No. W-7405-ENG-36, and the US Government has certain rights in this invention. [0003] related application [0004] This patent application claims priority to U.S. Provisional Patent Application No. 60 / 390,611, filed June 21, 2002, and entitled "Electrolytes for Electro-Optic Devices Containing Ionic Liquids," filed at This is incorporated herein by reference. field of invention [0005] The present invention relates generally to electrolytic solutions and electro-optic devices, and more particularly to electro-optical solutions formed by dissolving UV-resistant dyes in ionic liquid solvents and electro-optical devices using these electro-optical solutions. Background of the invention [0006] Electro-optic devices are devices whose optical properties change when a voltage is applied. Electro-optic devices have many uses. For example, electro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C311/48C07D213/22C08F4/06C09B45/00C09B57/00C09K9/02G02F1/1503G02F1/153G03C1/00H01B1/00H01MH01M6/18H01M10/40H01M10/42
CPCG02F1/1521C07C317/04C07C311/48G02F2001/1512C07D213/22C09B57/00G02F1/1503G02F2001/15145
Inventor 本杰明·P·沃纳T·马克·麦克斯凯安奥普·阿格沃约翰·P·克罗宁朱安·C·L·托阿齐安东尼·K·伯里尔
Owner LOS ALAMOS NATIONAL SECURITY
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