Electropolymerization method for preparing nano-tube type conducting polymer using porous template, method for preparing electrochromic device, and electrochromic device prepared therefrom

• US 7,204,895 B2
• Filed: 04/15/2003
• Issued: 04/17/2007
• Est. Priority Date: 04/15/2002
• Status: Expired due to Term

• Current Assignee: LG Chem Limited (LG Corporation)
• Original Assignee: LG Chem Limited (LG Corporation)
• Inventors: Choi, Shin-Jung, Kwon, Won-Jong, Kim, Sang-Ho, Lee, Sang-Bok, Park, Sun-Ah, Hwang, Yun-Il
• Primary Examiner(s): Wong; Edna
• Application Number:
  US10/482,322
• Publication Number:
  US 20050040048A1
• Time in Patent Office: 1,463 Days
• Field of Search: 205/414, 205/419, 359/265, 359/900, 156/1
• US Class Current: 156/1
• CPC Class Codes: B82Y 30/00 Nanotechnology for materials or surface science, e.g. nanocomposites
• CPC Class Codes: C08F 2/52 by electric discharge, e.g. voltolisation
• CPC Class Codes: C08J 5/005 Reinforced macromolecular compounds with nanosized materials, e.g. nanoparticles, nanofibres, nanotubes, nanowires, nanorods or nanolayered materials
• CPC Class Codes: G02F 1/15165 Polymers
• CPC Class Codes: Y10S 359/90 Methods

Abstract

The present invention relates to an electropolymerization method for preparing a nanotube-type conducting polymer using a porous template, a method for preparing an electrochomic device using electrochromism of the conducting polymer, and an electrochromic device prepared therefrom, and more particularly to an electropolymerization method for preparing a nanotube-type conducting polymer using a porous template to prepare an electrochromic device having good electrochromism by injecting an electrolyte solution wherein a precursor of the electrochromic conducting polymer is dissolved into an electrochemical reaction cell comprising a first transparent electrode and a working electrode, which is a porous template on the electrode, a method for preparing an electrochromic device using electrochromism of the conducting polymer, and an electrochromic device prepared therefrom.

Claims

1. A method for preparing an electrochromic device, comprising:

preparing a first plane comprising a first transparent electrode, a porous template located on the first transparent electrode, and a nanotube conducting polymer in pores of the porous template;

placing a second plane comprising a second transparent electrode on top of the porous template of the first plane; and

injecting an electrolyte solution between the first transparent electrode of the first plane and the second transparent electrode of the second plane;

wherein the first plane is prepared by a method comprising;

forming an electrochemical reaction cell including the first transparent electrode on which the porous template is located; and

electropolymerizing the nanotube conducting polymer from a precursor of the conducting polymer using the porous template in the electrochemical reaction cell.

2. The method according to claim 1, wherein the conducting polymer is selected from a group consisting of polypyrrole, polyaniline, polyazulene, polythiophene, polypyridine, polyindole, polycarbazole, polyazine, and polyquinone.

3. The method according to claim 1, wherein the porous template is an anodized metal oxide membrane or a polymer membrane.

4. The method according to claim 3, wherein the anodize metal oxide membrane is an anodize aluminum oxide membrane or an anodize titania membrane.

5. The method according to claim 3, wherein the polymer membrane is selected from the group consisting of polypropylene, nylon, polyester, and a block copolymer thereof.

6. The method according to claim 1, wherein the porous template has pores having a diameter of 5 to 500 nm and a pore density of 10 to 50% by cross section.