METHOD FOR PRODUCING SILVER NANOWIRES, SILVER NANOWIRES AND INK USING SAME

Title:

METHOD FOR PRODUCING SILVER NANOWIRES, SILVER NANOWIRES AND INK USING SAME

Document Type and Number:

WIPO Patent Application WO/2015/133453

Kind Code:

A1

Abstract:

A method for producing silver nanowires, wherein silver is precipitated in the form of wires by reduction in an alcohol solvent into which a silver compound is dissolved. The precipitation is carried out in an alcohol solvent into which a chloride, a bromide, an alkali metal hydroxide, an aluminum salt and an organic protection agent, which is a copolymer having a polymer composition of vinyl pyrrolidone and a diallyldimethylammonium salt monomer, are dissolved. The molar ratio of the total amount of Al in the aluminum slat to be dissolved in the solvent to the total amount of hydroxide ions in the alkali metal hydroxide to be dissolved in the solvent, namely Al/OH is set to 0.01-0.40. The molar ratio of the amount of hydroxide ions in the alkali metal hydroxide to be dissolved in the solvent to the total amount of Ag in the silver compound to be dissolved in the solvent, namely OH/Ag is set to 0.005-0.50. Consequently, thin and long silver nanowires, which have an average diameter of 50 nm or less and an average length of 10 μm or more and are suitable for the production of a transparent conductor, are stably produced by this method for producing silver nanowires.

Inventors:

SAITO HIROTOSHI (JP)
KODAMA DAISUKE (JP)
SATO KIMITAKA (JP)

Application Number:

PCT/JP2015/056162

Publication Date:

September 11, 2015

Filing Date:

March 03, 2015

Export Citation:

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Assignee:

DOWA HOLDINGS CO LTD (JP)

International Classes:

B22F9/24; B22F1/0545; B22F9/00; H01B1/00; H01B1/22; H01B5/00; H01B13/00

Foreign References:

JP2010084173A	2010-04-15
JP2013531133A	2013-08-01
JP2013503260A	2013-01-31
JP2014505963A	2014-03-06

Other References: