Title:
SILVER NANOWIRE MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2022/209613
Kind Code:
A1
Abstract:
[Problem] To provide a silver nanowire manufacturing method by which silver nanoparticles can be efficiently removed from a coarse dispersion liquid containing silver nanowires and the silver nanoparticles. [Solution] A silver nanowire manufacturing method characterized by including a coarse dispersion liquid preparation step for preparing a coarse dispersion liquid containing silver nanowires and silver nanoparticles and a reprecipitation/cleaning step for refining the silver nanowires in the coarse dispersion liquid by means of a reprecipitation method, wherein in the reprecipitation/cleaning step, a series of operations, which comprise (a) a precipitation step for causing silver nanowire-containing precipitates to precipitate by adding a precipitation solvent to the coarse dispersion liquid or to a redispersion liquid described below, (b) a supernatant removal step for removing a supernatant containing at least some of the silver nanoparticles formed by the precipitation of the precipitates, and (c) a redispersion step for obtaining a redispersion liquid by redispersing the precipitates in water by adding water having a specific resistance value of 3.3 MΩ·cm or higher to the remaining precipitates, are repeated several times.
Inventors:
HASEGAWA AOI (JP)
YAMAKI SHIGERU (JP)
TOBA MASAHIKO (JP)
YAMAKI SHIGERU (JP)
TOBA MASAHIKO (JP)
Application Number:
PCT/JP2022/009791
Publication Date:
October 06, 2022
Filing Date:
March 07, 2022
Export Citation:
Assignee:
SHOWA DENKO KK (JP)
International Classes:
B22F9/24; B22F1/00; B22F1/054; B22F1/062; B82Y40/00; H01B13/00
Foreign References:
| KR20140103601A | 2014-08-27 | |||
| JP2020190025A | 2020-11-26 | |||
| JP5936759B1 | 2016-06-22 | |||
| CN102211205A | 2011-10-12 | |||
| CN111715877A | 2020-09-29 | |||
| JP2017020104A | 2017-01-26 |
Attorney, Agent or Firm:
ARIHARA Motoji (JP)
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