Heat-resistant electrolyte materials and electrochromic devices including them
First Claim
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1. An electrolyte material comprising:
- about 35 to about 65 wt % of a polymer of ethyleneimine having at least 90 wt % ethyleneimine subunits, the polymer being at least partially crosslinked with residues from a polyfunctional epoxide crosslinker in an amount of about 0.1 to about 4 wt %;
about 0.2 to about 5 wt % of a lithium salt; and
about 20 to about 64 wt % of a high-boiling solvent.
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Abstract
The present disclosure relates to relates to heat-resistant gel electrolyte materials and their uses, for example, in electrochromic devices such as electrochromic windows. In certain embodiments, the disclosure provides an electrolyte material including a polymer of ethyleneimine, optionally at least partially crosslinked (e.g., with an epoxide crosslinker such as the diglycidyl ether of bisphenol A); a lithium salt (e.g., lithium perchlorate); and a high-boiling solvent (e.g., DMSO). The electrolyte materials can be used in electrochromic devices, such as electrochromic windows, e.g., for use as automobile sunroofs.
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Citations
21 Claims
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1. An electrolyte material comprising:
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about 35 to about 65 wt % of a polymer of ethyleneimine having at least 90 wt % ethyleneimine subunits, the polymer being at least partially crosslinked with residues from a polyfunctional epoxide crosslinker in an amount of about 0.1 to about 4 wt %; about 0.2 to about 5 wt % of a lithium salt; and about 20 to about 64 wt % of a high-boiling solvent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An electrolyte material comprising:
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a polymer of ethyleneimine; a lithium salt; and a high-boiling solvent, the electrolyte material having a % transmittance at 580 nm of at least about 50% per 100 μ
m thickness at 60°
C. - View Dependent Claims (20, 21)
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Specification