Method for forming silver film

Patent metadata

Field	Value
Publication number	US-2022033987-A1
Application number	US-202117337521-A
Country	US
Kind code	A1
Filing date	Jun 3, 2021
Priority date	Jul 29, 2020
Publication date	Feb 3, 2022
Grant date	—

Abstract

It is an object of the present disclosure to provide a method that allows uniformly forming a silver film by a solid electrolyte deposition. One aspect of this embodiment is a method for forming a silver film. The method includes disposing an anode, a substrate as a cathode, and a separator such that the separator is positioned between the anode and the substrate and the separator is in contact with a surface of the substrate, the separator including an electrolytic solution that contains silver ions, and applying a voltage between the anode and the substrate to form a silver film on the substrate. The separator is a porous membrane without ion exchange functional group. The electrolytic solution contains organic sulfonic acid ions. The substrate contains a crystalline metal, and a silver film is formed on the crystalline metal.

First claim

What is claimed is:

1 . A method for forming a silver film, comprising:
disposing an anode, a substrate as a cathode, and a separator such that the separator is positioned between the anode and the substrate and the separator is in contact with a surface of the substrate, the separator including an electrolytic solution that contains silver ions; and applying a voltage between the anode and the substrate to form a silver film on the substrate, wherein the separator is a porous membrane without ion exchange functional group, wherein the electrolytic solution contains organic sulfonic acid ions, and wherein the substrate comprises a crystalline metal, and the silver film is formed on the crystalline metal.

2 . The method according to claim 1 ,
wherein the electrolytic solution contains silver organic sulfonate.

3 . The method according to claim 2 ,
wherein the silver organic sulfonate is silver alkanesulfonate.

4 . The method according to claim 3 ,
wherein the silver alkanesulfonate is silver methanesulfonate.

5 . The method according to claim 1 ,
wherein the electrolytic solution is a silver methanesulfonate-potassium iodide bath.

6 . The method according to claim 5 ,
wherein the electrolytic solution further contains N-(3-hydroxy-1-butylidene)-p-sulfanilic acid (HBPSA).

7 . The method according to claim 1 ,
wherein the porous membrane is a polyolefin resin porous membrane.

8 . The method according to claim 7 ,
wherein the polyolefin resin porous membrane is a polyethylene resin porous membrane.

9 . The method according to claim 1 ,
wherein the crystalline metal is a nickel film.

10 . The method according to claim 9 ,
wherein the nickel film has a columnar crystal form.

Assignees

• Toyota Motor Co Ltd

Inventors

• Iisaka Hirofumi

Classifications

• Y02E60/10

  Energy storage using batteries · CPC title

• C25D3/00

  Electroplating: Baths therefor · CPC title

• C25D3/46 Primary

  of silver · CPC title

• C25D17/00

  Constructional parts, or assemblies thereof, of cells for electrolytic coating · CPC title

• C25D17/002

  Cell separation, e.g. membranes, diaphragms · CPC title