Polymeric ion-conductive electrolyte sheet

Patent metadata

Field	Value
Publication number	US-11086181-B2
Application number	US-201916511155-A
Country	US
Kind code	B2
Filing date	Jul 15, 2019
Priority date	Jul 16, 2018
Publication date	Aug 10, 2021
Grant date	Aug 10, 2021

Abstract

Methods and materials to fabricate electrochromic including electrochemical devices are disclosed. In particular, emphasis is placed on the composition, fabrication and incorporation of electrolytic sheets in these devices. Composition, fabrication and incorporation of redox layers and sealants suitable for these devices are also disclosed. Incorporation of EC devices in insulated glass system (IGU) windows is also disclosed.

First claim

The invention claimed is:

1. A polymeric ion-conductive electrolyte sheet comprising:
i) thermoplastic polymer formed using at least three monomers;
ii) a melting point or a flow point in excess of about 90° C. and less than about 170° C.;
iii) optical haze less than 5%, and
iv) a thickness of greater than 100 μm and less than 1,000 μm.

2. The polymeric ion-conductive sheet of claim 1 , having an ion-conductivity in a range of about 10 −2 to 10 −5 S per square cm of the sheet area when measured at 25° C.

3. The polymeric ion-conductive sheet of claim 1 , wherein the thermoplastic polymer is selected from a fluoropolymer, polyurethane, polyvinyl butyral, acrylic, polyester, polyurea, polycarbonate, polyvinyl acetate, or a combination thereof.

4. The polymeric ion conductive sheet of claim 1 , wherein the electrolyte sheet further comprises a plasticizer and a salt, wherein the salt can be solubilized by the said plasticizer.

5. The polymeric ion conductive sheet of claim 4 , wherein the said plasticizer solubilizes at least one monomer used to form the said thermoplastic polymer.

6. The polymeric ion conductive sheet of claim 1 , further comprising a UV stabilizer.

7. The polymeric ion conductive sheet of claim 1 , wherein the polymeric ion conductive sheet further comprises at least one of non-electronically conductive nanoparticles and surface modified non-electronically conductive nanoparticles.

8. The polymeric ion conductive sheet of claim 1 , wherein the polymeric ion conductive sheet contains at least one unreacted monomer which is not polymerized in said thermoplastic polymer.

9. The polymeric ion conductive sheet of claim 8 , wherein the polymeric ion conductive sheet contains a catalyst capable of polymerizing at least one additional monomer by radiation.

10. The polymeric ion conductive sheet of claim 9 , wherein the at least one unreacted monomer has cross-linkable groups.

11. The polymeric ion conductive sheet as in claim 8 , wherein the unreacted monomer is soluble in a plasticizer.

12. An electrochromic product comprising the polymeric ion conductive sheet of claim 1 .

13. A polymeric ion-conductive sheet comprising:
i) a thermoplastic polymer selected from one of polyurethane, polyester, polyurea, polycarbonate, or a combination thereof, and
ii) further comprising at least one of non-electronically conductive nanoparticles and surface modified non-electronically conductive nanoparticles, wherein the polymeric ion-conductive sheet has an optical haze of less than 5%,
iii) a thickness of greater than 100 μm and less than 1,000 nm.

14. An electrochromic device containing the polymeric ion-conductive electrolyte sheet of claim 1 .

15. An electrochromic device containing the polymeric ion-conductive sheet of claim 13 .

Assignees

• Polyceed Inc
• Huntsman Int Llc

Inventors

• Agrawal Anoop
• Adams Lori L
• Cronin John P
• Cao Lan
• Aris Zarif Farhana Mohd

Classifications

• H01M2300/0082

  Organic polymers · CPC title

• H01M10/0565

  Polymeric materials, e.g. gel-type or solid-type · CPC title

• H01M4/62

  Selection of inactive substances as ingredients for active masses, e.g. binders, fillers · CPC title

• H01M4/13

  Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof · CPC title

• H01B1/122

  Ionic conductors · CPC title