Low vapor pressure solvent for electrochromic devices
First Claim
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1. An electrolyte for transmitting ions for an electrochromic device, the electrolyte comprising:
- a first solvent including gamma-butyrolactone; and
a salt.
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Abstract
The present invention provides an electrolyte for electrochromic devices, the substance comprising γ-butyrolactone (gamma-butyrolactone or GBL). The electrolyte may include polymethylmethacrylate. The electrolyte may further include a salt, such as a salt that includes lithium perchlorate or trifluorosulfonimide. In accordance with further aspects to the invention, the electrolyte may include propylene carbonate.
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Citations
33 Claims
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1. An electrolyte for transmitting ions for an electrochromic device, the electrolyte comprising:
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a first solvent including gamma-butyrolactone; and
a salt. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An electrolyte for transmitting ions for an electrochromic device, the electrolyte comprising:
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gamma-butyrolactone;
propylene carbonate;
polymethylmethacrylate; and
a salt. - View Dependent Claims (9)
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10. An electrochromic device comprising:
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a first electrode sheet, the first electrode sheet being substantially transparent;
a second electrode sheet, the second electrode sheet being substantially transparent;
an electrochromic polymer layer disposed between the first electrode sheet and the second electrode sheet; and
a gel electrolyte disposed between the electrochromic polymer layer and one of the first electrode sheet and the second electrode sheet, the gel electrolyte including gamma-butyrolactone and a salt. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A method for conducting ions in an electrochromic device comprising:
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disassociating a salt into at least one component ion in an electrolyte in an electrochromic device, the electrolyte including gamma-butyrolactone; and
conducting the at least one component ion in the electrolyte by applying an electric field. - View Dependent Claims (17, 18, 19, 20)
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21. A method for providing an extended life for an electrochromic device, comprising:
disposing gamma-butyrolactone in an electrolyte in the electrochromic device. - View Dependent Claims (22, 23, 24)
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25. An electrochromic device, comprising:
an electrolyte having at least one salt dissolved in an effective amount of gamma-butyrolactone. - View Dependent Claims (26, 27)
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28. An electrochromic device comprising:
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an electrolyte including gamma-butyrolactone; and
a plurality of pigments of electrochromic material. - View Dependent Claims (29, 30, 31, 32, 33)
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Specification