METHOD OF MANUFACTURING ELECTRODE SUBSTRATE

• US 20110083886A1
• Filed: 10/05/2010
• Published: 04/14/2011
• Est. Priority Date: 10/06/2009
• Status: Abandoned Application

• Current Assignee: Kolon Industries Incorporated
• Original Assignee: Kolon Industries Incorporated
• Inventors: KIM, Jeong Han
• Application Number:
  US12/898,225
• Publication Number:
  US 20110083886A1
• Time in Patent Office: Days
• US Class Current: 174/257
• CPC Class Codes: C08J 7/0423 with at least one layer of inorganic material and at least one layer of a composition containing a polymer binder
• CPC Class Codes: C08J 7/043 Improving the adhesiveness of the coatings per se, e.g. forming primers adhesives in the form of films or foils characterised by the primer layers between the polymer carriers and the adhesives C09J7/50
• CPC Class Codes: H01B 1/24 the conductive material comprising carbon-silicon compounds, carbon or silicon

Abstract

Disclosed herein is a method of manufacturing an electrode substrate, by which a film-shape electrode substrate including a carbon nanotube layer, which does not include a dispersant, is not related to the kind of binder and is strongly attached to the electrode substrate, can be easily manufactured.

Claims

1. A method of manufacturing an electrode substrate, comprising the steps of:

applying a carbon nanotube-dispersed solution containing a low-molecular-weight dispersant onto a polymer substrate to form a the carbon nanotube-dispersant mixing layer;

washing the carbon nanotube-dispersant mixing layer to remove the low-molecular-weight dispersant;

impregnating the polymer substrate including the carbon nanotube-dispersant mixing layer from which the low-molecular-weight dispersant was removed with a polymer resin solution; and

taking out the polymer substrate from the polymer resin solution and then drying the polymer substrate.

2. The method according to claim 1, wherein the low-molecular-weight dispersant includes one or more selected from sodium dodecyl sulfate, lithium dodecyl sulfate, sodium dodecyl benzenesulfonate, sodium dodecyl sulfonate, dodecyltrimethylammonium bromide, and cetyltrimethylammonium bromide.

3. The method according to claim 1, wherein the carbon nanotube is selected from single-wall carbon nanotubes, double-wall carbon nanotubes, and multi-wall carbon nanotubes.

4. The method according to claim 1, wherein the polymer substrate is made of any one selected from polyimide, polyether sulfone, polyether ether ketone, polyethylene terephthalate, polybutylene terephthalate, polycarbonate, polyacrylate, and polyurethane.

5. The method according to claim 1, wherein, in the step of forming the carbon nanotube-dispersant mixing layer on the polymer substrate, the polymer substrate is coated with the carbon nanotube-dispersed solution containing the low-molecular-weight dispersant while it is heated to 60˜

100°

C.

6. The method according to claim 1, wherein the polymer resin constituting the polymer resin solution for impregnating the polymer substrate is selected from polyimide, polyether sulfone, polyether ether ketone, polyethylene terephthalate, polybutylene terephthalate, polycarbonate, polyacrylate, polyvinyl pyrrolidone, epoxy, and polyurethane.

7. The method according to claim 1, wherein the polymer resin constituting the polymer resin solution for impregnating the polymer substrate is a photocurable resin or a thermocurable resin.

8. The method according to claim 1, wherein the polymer resin solution for impregnating the polymer substrate includes at least one solvent selected from water, alcohol, acetone, ether, acetate, and toluene.

9. The method according to claim 1, wherein the polymer resin solution for impregnating the polymer substrate has a solid content of 0.01˜

5 wt %.

10. The method according to claim 1, wherein the step of drying the polymer substrate is performed at a temperature of 10˜

400°

C. for 1 minutes ˜

3 hours.

11. The method according to claim 1, wherein the step of drying the polymer substrate is performed such that a film formed on the polymer substrate by the polymer resin solution after the drying has a thickness of 0.001˜

0.1 μ

m from the top of the polymer substrate.

12. The method according to claim 1, further comprising the step of:

curing the dried polymer substrate after the step of drying the polymer substrate.

13. An electrode substrate manufactured by the method of any one of claims 1 to 12, wherein the electrode substrate is formed of a polymer resin substrate including a carbon nanotube-dispersed layer containing no dispersant thereon.