Color-changing polymer composition, ion-conductive composition, transparent electrode layer composition, and electrochromic device comprising same

Patent metadata

Field	Value
Publication number	US-12339556-B2
Application number	US-202117462893-A
Country	US
Kind code	B2
Filing date	Aug 31, 2021
Priority date	Dec 30, 2020
Publication date	Jun 24, 2025
Grant date	Jun 24, 2025

Abstract

Disclosed are a color-changing polymer composition, an ion-conductive composition, and a transparent electrode layer composition for a painting-type spray coating process, and an electrochromic device including the same. The color-changing polymer composition for an electrochromic device includes an amount of about 5 to 30 wt % of a color-changing material, an amount of about 0.01 to 1 wt % of ferrocene, an amount of about 10 to 30 wt % of a polymer matrix, an amount of about 0 to 70 wt % of an ion-conductive material, and an amount of about 1 to 10 wt % of a POSS (polyhedral oligomeric silsesquioxane) derivative, based on the total weight of the composition.

First claim

What is claimed is:

1. A color-changing polymer composition for an electrochromic device, comprising:
an amount of about 5 to 30 wt % of a color-changing material;
an amount of about 0.01 to 1 wt % of ferrocene;
an amount of about 10 to 30 wt % of a polymer matrix;
an amount of about 20 to 70 wt % of an ion-conductive material; and
an amount of about 1 to 10 wt % of a polyhedral oligomeric silsesquioxane (POSS) derivative,
all the wt % based on the total weight of the color-changing polymer composition.

2. The color-changing polymer composition of claim 1 , wherein the color-changing material comprises octahexylviologen polyhedral oligomeric silsesquioxane (OHV-POSS) containing one to eight monohexyl-viologens on a reactive functional group of POSS (polyhedral oligomeric silsesquioxane).

3. The color-changing polymer composition of claim 1 , wherein the ferrocene comprises ferrocene substituted with an alkyl group.

4. The color-changing polymer composition of claim 1 , wherein the polymer matrix comprises one or more selected from polyvinylidene fluoride (PVDF) and derivatives thereof, polymethylmethacrylate (PMMA) and derivatives thereof, and polyvinyl alcohol (PVA).

5. The color-changing polymer composition of claim 1 , wherein the ion-conductive material comprises one or more of a room-temperature ionic liquid and a lithium salt.

6. The color-changing polymer composition of claim 1 , wherein the POSS (polyhedral oligomeric silsesquioxane) derivative comprises one or more substituted groups of alkyl, vinyl, and glycidyl.

7. The color-changing polymer composition of claim 1 , wherein the color-changing polymer composition further comprises a solvent component, and the solvent comprises one or more selected from the group consisting of isopropyl alcohol (IPA), ethanol, methanol, acetone, toluene, methyl ethyl ketone (MEK), ethyl acetate, methyl isobutyl ketone (MIBK), dimethylformamide (DMF), and dimethyl sulfoxide (DMSO).

8. An ion-conductive composition for an electrochromic device, comprising:
an amount of about 20 to 40 wt % of a polymer matrix;
an amount of about 20 to 40 wt % of a reactive POSS (polyhedral oligomeric silsesquioxane) material;
an amount of about 20 to 40 wt % of a lithium salt, and
an amount of about 20 wt % or less and greater than 0 wt % of a room-temperature ionic liquid based on the total weight of the composition, and a solvent component, wherein the solvent component comprises one or more selected from isopropyl alcohol (IPA), ethanol, methanol, acetone, toluene, methyl ethyl ketone (MEK), ethyl acetate, methyl isobutyl ketone (MIBK) dimethylformamide (DMF), and dimethyl sulfoxide (DMSO).
all the wt % based on the total weight of the ion-conductive composition.

9. The ion-conductive composition of claim 8 , wherein the polymer matrix comprises one or more selected from polyvinylidene fluoride (PVDF) and derivatives thereof, polymethylmethacrylate (PMMA) and derivatives thereof, and polyvinyl alcohol (PVA).

10. The ion-conductive composition of claim 8 , wherein the reactive POSS material comprises one or more selected from glycidyl POSS, acrylic POSS, octaphenyl POSS, isocyanate POSS, and alkyl POSS.

Assignees

• Hyundai Motor Co Ltd
• Kia Corp
• Nat Univ Pusan Ind Univ Coop Found

Inventors

• Cha Dong Eun
• Park Jong Seung
• Choi Jun Hong

Classifications

• C08L29/04

  Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids · CPC title

• C08L2203/20

  use in electrical or conductive gadgets · CPC title

• G02F1/15165 Primary

  Polymers · CPC title

• C08L2205/03

  containing three or more polymers in a blend · CPC title

• C08L33/12

  Homopolymers or copolymers of methyl methacrylate · CPC title