High performance stretchable electrode with full area coverage and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-11749800-B2
Application number	US-202117488578-A
Country	US
Kind code	B2
Filing date	Sep 29, 2021
Priority date	Oct 13, 2020
Publication date	Sep 5, 2023
Grant date	Sep 5, 2023

Abstract

Disclosed are a high performance stretchable electrode having a double layer structure with flexibility and high coverage, as well as a manufacturing method thereof. The stretchable electrode of the present invention has excellent performance based on high coverage. Therefore, the present invention may provide a high performance stretchable electrode with high conductivity and low gauge factor by selectively adjusting flexibility of the electrode.

First claim

What is claimed is:

1. A stretchable electrode, comprising:
a substrate;
a silver nanowire (AgNW) thin film layer formed on the substrate; and
a gold (Au) thin film layer formed on the AgNW thin film layer.

2. The stretchable electrode according to claim 1 , wherein the Au thin film layer has a thickness of 50 to 300 nm.

3. The stretchable electrode according to claim 1 , wherein the substrate comprises polydimethylsiloxane (PDMS), silicone rubber or hydrogel.

4. The stretchable electrode according to claim 1 , wherein the substrate contains a hydroxyl group introduced into the surface thereof.

5. A method for manufacturing a stretchable electrode, comprising:
preparing a silver nanowire solution;
forming a sliver nanowire (AgNW) thin film layer on a substrate using the silver nanowire solution; and
forming a gold (Au) thin film layer on the AgNW thin film layer.

6. The method according to claim 5 , wherein the AgNW thin film layer is formed by applying the silver nanowire solution to the substrate through spin-coating.

7. The method according to claim 5 , wherein the substrate comprises polydimethylsiloxane (PDMS), silicone rubber or hydrogel.

8. The method according to claim 5 , wherein the substrate is treated with UV-ozone.

9. The method according to claim 5 , wherein the Au thin film layer is formed by thermal deposition.

10. The method according to claim 5 , wherein the Au thin film layer has a thickness of 50 to 300 nm.

Assignees

• Univ Korea Res & Bus Found

Inventors

• Oh Soong Ju
• Bang Jun Sung
• Ahn Jun Hyuk
• Lee Yong Min
• Lee Sang Yeop

Classifications

• H01M4/366 Primary

  as layered products · CPC title

• H01B1/22 Primary

  the conductive material comprising metals or alloys · CPC title

• H01B5/14

  comprising conductive layers or films on insulating-supports · CPC title

• H01B5/16 Primary

  comprising conductive material in insulating or poorly conductive material, e.g. conductive rubber (H01B1/14, H01B1/20 take precedence; insulating bodies with conductive admixtures H01B17/64; conductive paints C09D5/24) · CPC title

• H01B13/008

  for manufacturing extensible conductors or cables · CPC title