Method of manufacturing a nano metal wire

Patent metadata

Field	Value
Publication number	US-9761354-B2
Application number	US-201314094348-A
Country	US
Kind code	B2
Filing date	Dec 2, 2013
Priority date	Apr 18, 2013
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

Disclosed is a method of manufacturing a nano metal wire, including: putting a metal precursor solution in a core pipe of a needle; putting a polymer solution in a shell pipe of the needle, wherein the shell pipe surrounds the core pipe; applying a voltage to the needle while simultaneously jetting the metal precursor solution and the polymer solution to form a nano line on a collector, wherein the nano line includes a metal precursor wire surrounded by a polymer tube; chemically reducing the metal precursor wire of the nano line to form a nano line of metal wire surrounded by the polymer tube; and washing out the polymer tube by a solvent.

First claim

What is claimed is:

1. A method of manufacturing a nano metal wire, comprising:
putting a metal precursor solution consisting of a metal compound and a chemical reducing agent in a core pipe of a needle;
putting a polymer solution in a shell pipe of the needle, wherein the shell pipe surrounds the core pipe;
applying a voltage to the needle while simultaneously jetting the metal precursor solution and the polymer solution to form a nano line on a collector, wherein the nano line includes a metal precursor wire surrounded by a polymer tube;
chemically reducing the metal precursor wire of the nano line to form a nano line of a nano metal wire surrounded by the polymer tube; and
washing out the polymer tube by a solvent.

2. The method as claimed in claim 1 , wherein the polymer solution further comprises a salt.

3. The method as claimed in claim 2 , wherein the salt has a concentration of 1 mg/mL to 100 mg/mL.

4. The method as claimed in claim 1 , wherein the metal wire of the nano line comprises silver, platinum, gold, or combinations thereof.

5. The method as claimed in claim 1 , wherein the polymer tube comprises polyvinylpyrrolidone (PVP).

6. The method as claimed in claim 1 , wherein the polymer solution is jetted out of the needle with a flow rate of 0.1 mL/hr to 5 mL/hr.

7. The method as claimed in claim 1 , wherein the metal precursor solution is jetted out of the needle with a flow rate of 0.01 mL/hr to 1 mL/hr.

8. The method as claimed in claim 1 , wherein the shell pipe and the core pipe are concentric cylinders.

9. The method as claimed in claim 1 , wherein the core pipe has a diameter of 0.5 mm to 2 mm.

10. The method as claimed in claim 1 , wherein the shell pipe and the core pipe have a diameter difference of 0.01 mm to 5 mm.

11. The method as claimed in claim 1 , wherein the step of chemically reducing the metal precursor wire of the nano line comprises an annealing step performed at a temperature of 100° C. to 200° C.

12. The method as claimed in claim 1 , wherein the voltage is between 10 kV to 12 kV.

13. The method as claimed in claim 1 , wherein a tip of the needle and the collector has a distance of 5 cm to 50 cm therebetween.

14. The method as claimed in claim 1 , wherein the nano metal wire has a length of greater than or equal to 1 cm.

Assignees

• Ind Tech Res Inst

Inventors

• Sun Wen-Hsien
• Chen Lien-Tai
• Chen Wen-Chang
• Chen Jung-Yao

Classifications

• D01D5/0046

  the fibre formed by coagulation, i.e. wet electro-spinning · CPC title

• D01D5/0023

  the material being a polymer melt · CPC title

• D01D5/0015

  characterised by the initial state of the material · CPC title

• D01D5/0038

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

• Y10T428/294

  including metal or compound thereof [excluding glass, ceramic and asbestos] · CPC title