Film forming device and method for forming metal film using the same

Patent metadata

Field	Value
Publication number	US-2020190685-A1
Application number	US-201916658163-A
Country	US
Kind code	A1
Filing date	Oct 21, 2019
Priority date	Dec 18, 2018
Publication date	Jun 18, 2020
Grant date	—

Abstract

A film forming device for forming a metal film at a high current efficiency and a method for forming the metal film using the film forming device are provided. The film forming device to form the metal film includes an anode, a cathode, a porous membrane disposed between the anode and the cathode to be capable of contacting the cathode, a solution container defining a solution containing space between the anode and the porous membrane, and a power supply applying a voltage between the anode and the cathode. The porous membrane is composed of a polyolefin chain without an ion-exchange functional group.

First claim

What is claimed is:

1 . A film forming device for forming a metal film comprising:
an anode; a cathode; a porous membrane disposed between the anode and the cathode to be capable of contacting the cathode; a solution container defining a solution containing space between the anode and the porous membrane; and a power supply applying a voltage between the anode and the cathode, wherein the porous membrane is composed of a polyolefin chain without an ion-exchange functional group.

2 . The film forming device according to claim 1 ,
wherein the porous membrane has a pore diameter within a range of 20 to 2000 nm.

3 . The film forming device according to claim 1 ,
wherein the porous membrane has air permeability within a range of 5 to 500 s/100 cm 3 .

4 . A method for forming a film of metal comprising
applying a voltage between the anode and the cathode in the film forming device according to claim 1 in a state where the solution containing space is filled with a liquid electrolyte containing ions of the metal and the porous membrane is in contact with the cathode.

5 . The method according to claim 4 ,
wherein the metal has a negative standard oxidation-reduction potential.

6 . The method according to claim 4 , further comprising
impregnating the porous membrane with ethanol, wherein the voltage is applied between the anode and the cathode while the porous membrane is heated.

7 . The method according to claim 4 ,
wherein the metal is tin or nickel.

8 . The method according to claim 7 ,
wherein the metal is the tin, and the liquid electrolyte contains methanesulfonic acid.

Assignees

• Toyota Motor Co Ltd

Inventors

• Iisaka Hirofumi

Classifications

• C25D21/02

  Heating or cooling · CPC title

• C25D17/002 Primary

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

• C25D3/30

  of tin · CPC title

• C25D17/14

  for pad-plating · CPC title

• C25D5/12

  at least one layer being of nickel or chromium · CPC title