Method for manufacturing electrode structure for flexible energy storage device, electrode structure manufactured thereby, and energy storage device including same

Patent metadata

Field	Value
Publication number	US-10026965-B2
Application number	US-201515032090-A
Country	US
Kind code	B2
Filing date	Apr 30, 2015
Priority date	Apr 30, 2014
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

An exemplary embodiment of the present invention provides a manufacturing method of an electrode structure for an energy storage device, the method including: forming a polymer substrate configured to have a first uneven pattern on a first surface; forming an electrode active material layer on the first uneven pattern in a state that an tensile force is applied to the polymer substrate; and forming a second uneven pattern on the polymer substrate and the electrode active material layer by removing the tensile force.

First claim

The invention claimed is:

1. A manufacturing method of an electrode structure for an energy storage device, the method comprising:
forming a polymer substrate configured to have a first uneven pattern on a first surface thereof;
forming an electrode active material layer on the first uneven pattern in a state that an tensile force is applied to the polymer substrate; and
forming a second uneven pattern on the polymer substrate and the electrode active material layer by removing the tensile force.

2. The method of claim 1 , wherein the forming of the polymer substrate comprises:
forming a mold formed to have the first uneven pattern;
stacking a polymer substrate on the mold; and
separating the mold from the polymer substrate.

3. The method of claim 1 , wherein the electrode active material layer is a positive electrode active material layer or a negative electrode active material layer.

4. The method of claim 3 , wherein the positive electrode active material layer comprises a positive electrode active material, a binder, and a conductive material.

5. The method of claim 1 , wherein the forming of the electrode active material layer comprises:
coating a carbon nanotube (CNT) network thin film on the first uneven pattern in the state that the tensile force is applied to the polymer substrate; and
applying the electrode active material layer on the CNT network thin film in the state that the tensile force is maintained.

6. The method of claim 5 , wherein the polymer substrate is formed of a complex of a CNT and a polymer.

7. The method of claim 5 further comprising
radiating a microwave on the electrode active material, after the forming of the second uneven pattern.

Assignees

• Korea Inst Mach & Materials

Inventors

• Shim Hyung Cheoul
• Hyun Seung Min
• Chang Sunghwan
• Kim Jeong Hwan
• Jeong Jun-Ho

Classifications

• H01G11/26

  characterised by their structure, e.g. multi-layered, porosity or surface features · CPC title

• H01M4/668 Primary

  Composites of electroconductive material and synthetic resins · CPC title

• H01G11/36

  Nanostructures, e.g. nanofibres, nanotubes or fullerenes · CPC title

• H01M4/139

  Processes of manufacture · CPC title

• H01M4/70

  characterised by shape or form · CPC title