Back to results
US 10,703,881 B2Granted
Polymer electrolyte and electrochromic devices including polymer electrolyte
AssigneeFurcifer Inc.
InventorsChao Wang, Yan Zhou
Life of this patent
Estimating the term…
Abstract
The disclosure relates generally to a solid polymer electrolyte for use in electrochromic devices. The solid polymer electrolyte may include a framework of one or more polar crystalline polymers, one or more polar amorphous polymers, and one or more electrolyte salts.
Claims13
A solid polymer electrolyte, comprising:
- a framework of one or more polar crystalline polymers;
- one or more polar amorphous polymers;
- and
- one or more electrolyte salts;
- wherein the one or more polar crystalline polymers or the one or more polar amorphous polymers are ionic conductive;
- wherein the one or more polar crystalline polymers is Poly(vinylidene fluoride-co-hexafluoropropylene) PVDF-HFP in a range from 0 wt. % to 60 wt. % based on the total weight of the solid polymer electrolyte;
- and
- wherein the one or more polar amorphous polymers is polyethylene oxide (PEO) oligomers in a range from 20 wt. % to 70 wt. % based on the total weight of the solid polymer electrolyte;
- wherein the one or more electrolyte salts is LiTFSI in about 30% wt. based on the total weight of the solid polymer electrolyte.
6 more elements
An electrochromic device, comprising:
- a first electrode;
- a second electrode;
- an electrochromic material deposited on at least the first electrode;
- and
- a solid polymer electrolyte disposed between the electrochromic material and the second electrode, wherein the solid polymer electrolyte comprises:
- a framework of one or more polar crystalline polymers;
- one or more polar amorphous polymers;
- and
- one or more electrolyte salts;
- wherein the one or more polar crystalline polymers or the one or more polar amorphous polymers are ionic conductive;
- wherein the one or more polar crystalline polymers is Poly(vinylidene fluoride-co-hexafluoropropylene) PVDF-HFP in a range from 0 wt. % to 60 wt. % based on the total weight of the solid polymer electrolyte;
- and
- wherein the one or more polar amorphous polymers is polyethylene oxide (PEO) oligomers in a range from 20 wt. % to 70 wt. % based on the total weight of the solid polymer electrolyte;
- wherein the electrolyte salt is LiTFSI in about 30% wt. based on the total weight of the solid polymer electrolyte.
11 more elements
A method of making a solid polymer electrolyte, comprising:
- forming the solid polymer electrolyte by microphase separation of multiple materials comprising:
- one or more polar crystalline polymers;
- one or more polar amorphous polymers;
- and
- one or more electrolyte salts;
- wherein the one or more polar crystalline polymers, the one or more polar amorphous polymers, and the one or more electrolyte salts are blended together into a transparent film by using solution processing or extrusion;
- wherein the one or more polar crystalline polymers or the one or more polar amorphous polymers are ionic conductive;
- wherein the one or more polar crystalline polymers is Poly(vinylidene fluoride-co-hexafluoropropylene) PVDF-HFP in a range from 0 wt. % to 60 wt. % based on the total weight of the solid polymer electrolyte;
- and
- wherein the one or more polar amorphous polymers is polyethylene oxide (PEO) oligomers in a range from 20 wt. % to 70 wt. % based on the total weight of the solid polymer electrolyte;
- wherein the electrolyte salt is LiTFSI in about 30% wt. based on the total weight of the solid polymer electrolyte.
8 more elements
Dependencies are inferred from the claim text.