ELECTRODE FOR SUPER-CAPACITOR, SUPER-CAPACITOR INCLUDING ELECTRODE, AND METHOD FOR PREPARING ELECTRODE

• US 20130068721A1
• Filed: 11/16/2012
• Published: 03/21/2013
• Est. Priority Date: 03/17/2009
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: PARK, Jin-hwan, PARK, Sung-ho, SHIN, Tae-yeon
• Application Number:
  US13/679,272
• Publication Number:
  US 20130068721A1
• Time in Patent Office: Days
• US Class Current: 216/13
• CPC Class Codes: H01G 11/22 Electrodes
• CPC Class Codes: H01G 11/26 characterised by their structure, e.g. multi-layered, porosity or surface features
• CPC Class Codes: H01G 11/46 Metal oxides
• CPC Class Codes: H01G 11/86 specially adapted for electrodes carbonisation or activation of carbon for the manufacture of electrodes H01G11/34
• CPC Class Codes: H01G 9/0029 Processes of manufacture
• CPC Class Codes: Y02E 60/13 Energy storage using capacitors

Abstract

An electrode for a super-capacitor, a super-capacitor including the electrode, and a method of preparing the electrode in which the electrode includes a conductive substrate; metal nano structures formed on the conductive substrate; and a metal oxide coated on the metal nano structures. The electrode for the super-capacitor increases the capacitance of the super-capacitor.

Claims

1. A method of manufacturing an electrode for a super-capacitor, the method comprising:

coating a first metal on a surface of a porous template to form a first metal layer, the porous template having regularly arranged nanopores, and the first metal layer closing ends of each of the nanopores of the porous template;

forming conducting polymer rods on the first metal layer in the nanopores of the porous template;

etching a portion of the porous template to form spaces between the conducting polymer rods and surfaces of the nanopores;

forming metal nanotubes comprising the first metal and a second metal in the spaces;

selectively etching the conducting polymer rods, the second metal, and the porous template to form porous metal nanotubes formed of the first metal; and

coating a metal oxide on the porous metal nanotubes to form a metal oxide layer.

2. The method of claim 1, wherein the porous template is an anodic aluminum oxide template.

3. The method of claim 1, wherein opposite ends of each of the nanopores, the opposite ends being opposite to the ends closed by the first metal layer, are open.

4. The method of claim 1, wherein the first metal comprises one selected from the group consisting of Au, Ag, Ni, Cu, Pt, Mn, Ru, Li, and any combinations thereof.

5. The method of claim 1, wherein the second metal is different from the first metal, and comprises one selected from the group consisting of Au, Ag, Ni, Cu, Pt, Mn, Ru, U. and any combinations thereof.

6. The method of claim 1, wherein the conducting polymer rods comprise at least one selected from the group consisting of polyaniline, polythiophen, polypyrrole, and any combinations thereof.

7. The method of claim 1, wherein the metal oxide comprises at least one selected from the group consisting of RuO₂, MnO₂, IrO₂, NiO_x (0<

x<

2), CoO_x (0<

x<

2), and any combinations thereof.

8. The method of claim 1, further coating a porous polymer on the metal oxide layer.

9. The method of claim 8, wherein the porous polymer comprises at least one selected from the group consisting of NAFION, ACIPLEX, FLEMION, DOW, and any combinations thereof.

10. The method of claim 1, further comprising, before the etching, drying the conducting polymer rods at a temperature of about 50 to about 200°

C. for about 30 minutes to about 2 hours.

11. A method of manufacturing an electrode for a super-capacitor, the method comprising:

coating a first metal on a surface of a porous template to form a first metal layer, the porous template having regularly arranged nanopores, and the first metal layer closing ends of each of the nanopores of the porous template;

forming metal nanorods on the first metal layer in the nanopores of the porous template;

etching the porous template; and

coating a metal oxide on the metal nanorods to form a metal oxide layer.

12. The method of claim 11, wherein the porous template is an anodic aluminum oxide template.

13. The method of claim 11, wherein opposite ends of each of the nanopores, the opposite ends being opposite to the ends closed by the first metal layer, are open.

14. The method of claim 11, wherein the first metal comprises one selected from the group consisting of Au, Ag, Ni, Cu, Pt, Mn, Ru, Li, and any combinations thereof.

15. The method of claim 11, wherein the metal oxide comprises at least one selected from the group consisting of RuO₂, MnO₂, IrO₂, NiO_x (0<

x<

2), CoO_x (0<

x<

2), and any combinations thereof.

16. The method of claim 11, further coating a porous polymer on the metal oxide layer.

17. The method of claim 16, wherein the porous polymer comprises at least one selected from the group consisting of NAFION, ACIPLEX, FLEMION, DOW, and any combinations thereof.