Electrochromic mirror

Patent metadata

Field	Value
Publication number	US-10281792-B2
Application number	US-201815864455-A
Country	US
Kind code	B2
Filing date	Jan 8, 2018
Priority date	Feb 16, 2017
Publication date	May 7, 2019
Grant date	May 7, 2019

Abstract

An electrochromic mirror includes a first electrode structure, a second electrode structure provided on the first electrode structure, and an electrolyte provided between the first and second electrode structures. Here, the first electrode structure further includes a metal layer, a graphene layer disposed on the metal layer, and an interface part disposed between the metal layer and the graphene layer. The interface part includes a micro/nano-porous polymer material.

First claim

What is claimed is:

1. An electrochromic mirror comprising:
a first electrode structure;
a second electrode structure provided on the first electrode structure; and
an electrolyte provided between the first and second electrode structures,
wherein the first electrode structure further comprises:
a metal layer;
a graphene layer disposed on the metal layer; and
an interface part disposed between the metal layer and the graphene layer, and
the interface part includes a micro/nano-porous polymer material.

2. The electrochromic mirror of claim 1 , wherein the interface part comprises:
a capping layer configured to cover a top surface of the metal layer; and
an adhesion layer disposed between the capping layer and the graphene layer.

3. The electrochromic mirror of claim 2 , wherein the capping layer comprises a micro/nano-porous polymer material.

4. The electrochromic mirror of claim 3 , wherein the capping layer comprises a polyvinylidene fluoride homopolymer (PVdF), a polyvinylidene fluoride-hexapropylene copolymer (PVdF-HFP), and a combination thereof.

5. The electrochromic mirror of claim 2 , wherein the adhesion layer an inorganic material including silicon, a polymer having a benzene ring, an organic monomolecular material having a benzene ring, or a combination thereof.

6. The electrochromic mirror of claim 5 , wherein the adhesion layer comprises SiO 2 , polyimide, rubrene, or a combination thereof.

7. The electrochromic mirror of claim 1 , wherein the interface part comprises:
a capping layer; and
adhesion particles dispersed in the capping layer.

8. The electrochromic mirror of claim 7 , wherein the capping layer comprises a polyvinylidene fluoride homopolymer (PVdF), and
the adhesion particles comprise SiO 2 .

9. The electrochromic mirror of claim 1 , further comprising an ionic reaction layer provided on the graphene layer,
wherein the ionic reaction layer is colored when receiving electrons from the graphene layer and transparent when providing electrons to the graphene layer.

10. The electrochromic mirror of claim 1 , further comprising a passivation layer provided on the graphene layer.

11. The electrochromic mirror of claim 10 , wherein the passivation layer comprises a solid polymer-type electrolyte layer.

Assignees

• Electronics & Telecommunications Res Inst

Inventors

• Kim Joo Yeon
• Lee Jeong Ik
• Cheon Sang Hoon
• Cho Nam Sung
• Cho Seong-Mok
• Kim Yong Hae
• Kim Tae-Youb
• Ryu Hojun
• Ah Chil Seong
• Hwang Chi-Sun

Classifications

• G02F1/155 Primary

  Electrodes · CPC title

• G02F2202/022

  polymeric · CPC title

• G02F2001/1555

  Counter electrode · CPC title

• G02F2001/1502

  complementary cell · CPC title

• G02F1/1533

  structural features not otherwise provided for · CPC title