Stretchable conductive nanofibers, stretchable electrode using the same and method of producing the stretchable conductive nanofibers

Patent metadata

Field	Value
Publication number	US-10337122-B2
Application number	US-201514679112-A
Country	US
Kind code	B2
Filing date	Apr 6, 2015
Priority date	Aug 10, 2011
Publication date	Jul 2, 2019
Grant date	Jul 2, 2019

Abstract

A method of producing stretchable conductive nanofibers includes: providing stretchable nanofibers; providing a metal precursor solution by dissolving metal precursors in a solvent that may swell the stretchable nanofibers; bringing the stretchable nanofibers into contact with the metal precursor solution or its vapor for a sufficient time for the metal precursors to penetrate into the stretchable nanofibers; and reduce the metal precursors inside the stretchable nanofibers to metal nanoparticles.

First claim

What is claimed is:

1. A mat comprising a plurality of stretchable conductive nanofibers, the plurality of stretchable conductive nanofibers comprising:
a stretchable nanofiber; and
a percolation network of conductive nanoparticles, said percolation network of conductive nanoparticles being inside the stretchable nanofiber and the conductive nanoparticles comprising silver, gold, copper, palladium, or platinum,
wherein a total mass of the conductive nanoparticles is in a range of about 30 to about 70 weight part based on 100 weight part of a total mass of the plurality of stretchable conductive nanofibers, and the average dimension of the conductive nanoparticles is in a range of about 5 to 100 nm, and
wherein the stretchable nanofiber is formed of an ethylene propylene diene rubber, polychloroprene rubber, fluorine rubber, butyl rubber, polyisoprene, or a mixture thereof.

2. The mat of claim 1 , wherein the percolation network of conductive nanoparticles comprises a first percolation network of conductive nanoparticles formed inside the stretchable nanofiber and a second percolation network of conductive nanoparticles on a surface of the stretchable nanofiber.

3. The mat of claim 1 , wherein the plurality of stretchable conductive nanofibers further comprise conductive nanoparticles bound to a surface of the stretchable nanofiber.

4. The mat of claim 1 , wherein the stretchable nanofiber has a diameter in a range of about 100 nm to about 5.0 μm.

5. A stretchable conductive electrode comprising the mat according to claim 1 .

6. The mat of claim 1 , wherein the stretchable nanofiber is formed of an ethylene propylene diene rubber.

7. The mat of claim 1 , wherein the stretchable nanofiber is formed of a polychloroprene rubber.

8. The mat of claim 1 , wherein the stretchable nanofiber is formed of a fluorine rubber.

9. The mat of claim 1 , wherein the stretchable nanofiber is formed of a butyl rubber.

10. The mat of claim 1 , wherein the stretchable nanofiber is formed of polyisoprene.

Assignees

• Samsung Electronics Co Ltd
• Univ Yonsei Iacf

Inventors

• Park Jong-Jin
• Im Jung-Kyun
• Kim Sang-Won
• Jeong Un-Yong

Classifications

• D01D5/0038 Primary

  the fibre formed by solvent evaporation, i.e. dry electro-spinning · CPC title

• Y10T442/602

  Nonwoven fabric comprises an elastic strand or fiber material · CPC title

• B82Y30/00 Primary

  Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title

• D01F1/09

  for making electroconductive or anti-static filaments · CPC title

• H01B1/22

  the conductive material comprising metals or alloys · CPC title