Metal nanowire and method of preparing the same

Patent metadata

Field	Value
Publication number	US-10610935-B2
Application number	US-201715634214-A
Country	US
Kind code	B2
Filing date	Jun 27, 2017
Priority date	Jun 28, 2016
Publication date	Apr 7, 2020
Grant date	Apr 7, 2020

Abstract

The present disclosure relates to a metal nanowire having a high aspect ratio and a method of preparing the metal nanowire having a high aspect ratio without using an organic stabilizer.

First claim

The invention claimed is:

1. A method of preparing a metal nanowire, the method comprising:
adding a metal precursor and a salt into a solvent and making a reaction to form a metal nanowire,
wherein the salt includes a combination of a first salt including halides or sulfide salts of alkali metals and halide salts or sulfide salts of Ag metal and a second salt different from the first salt and including a compound represented by the following Chemical Formula 1:
MA n ;  [Chemical Formula 1]

in Chemical Formula 1, M includes a metal selected from the group consisting of Ni, Cu, Co, Mn, Fe, Na, Ru, Au, Pt, Sn, Pd, Zn, Ti, Ir, Ce, Ca, Rh, Mo, W, B, Li and combinations thereof,
A includes a halide group, a nitrate group, a sulfide group, an acetate group, or a sulfate group, and
n is 1 to 3, and
wherein an organic stabilizer is not used.

2. The method of preparing a metal nanowire of claim 1 , wherein the salt includes one or more salts selected from the group consisting of halides of alkali metals, sulfide salts of alkali metals, halide salts of Ag, sulfate salts of Ag, nitrate salts of Fe 3+ , acetate salts of Fe 3+ , sulfate salts of Fe 3+ , halide salts of Fe 3+ , and combinations thereof.

3. The method of preparing a metal nanowire of claim 1 , wherein an equivalence ratio of the first salt and the second salt is in the range of from 0.01 to 1,000.

4. The method of preparing a metal nanowire of claim 1 , wherein the salt includes one or more salts selected from the group consisting of NaCl, Na 2 S, KBr, NaBr, AgCl, FeCl 3 , Fe(NO 3 ) 3 and combinations thereof.

5. The method of preparing a metal nanowire of claim 1 , wherein the metal precursor includes silver (Ag).

6. The method of preparing a metal nanowire of claim 5 , wherein the metal precursor includes at least one material selected from the group consisting of silver nitrate, silver silicate, silver trifluoroacetate, silver acetate, silver chloride, silver bromide, silver acetylacetonate, silver iodide, silver sulfide, and combinations thereof.

7. The method of preparing a metal nanowire of claim 1 , wherein the solvent includes polyol.

8. The method of preparing a metal nanowire of claim 7 , wherein the polyol includes at least one material selected from the group consisting of ethylene glycol, propylene glycol, butylene glycol, butanediol, pentanediol, hexanediol, diethylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol, glycerol, and combinations thereof.

9. The method of preparing a metal nanowire of claim 1 , wherein a temperature of the reaction is from 25° C. to 300° C.

10. The method of preparing a metal nanowire of claim 1 , wherein the metal nanowire has an aspect ratio of 5 or more.

Assignees

• Research & Business Found Sungkyunkwan Univ

Inventors

• Lim Byungkwon
• Bok Shingyu
• Sim Hwansu

Classifications

• H01B13/0036

  Details · CPC title

• B22F9/24 Primary

  starting from liquid metal compounds, e.g. solutions · CPC title

• H01B1/02

  mainly consisting of metals or alloys · CPC title

• B22F1/0044

  Operations & Transport · mapped topic

• B22F1/0025

  Operations & Transport · mapped topic