Method of transferring catalyst layer and jig used therefor

Patent metadata

Field	Value
Publication number	US-2015171450-A1
Application number	US-201314412332-A
Country	US
Kind code	A1
Filing date	Jun 24, 2013
Priority date	Jul 2, 2012
Publication date	Jun 18, 2015
Grant date	—

Abstract

A transferring method for transferring a catalyst layer to a desired position on an electrolyte film includes the following processes. A multi-layer body is formed by stacking base materials and an electrolyte film on one another such that catalyst layers formed on the base materials are brought into contact with the electrolyte film. The multi-layer body is pressed from a stacking direction. The multi-layer body is heated to a first temperature. The heating is stopped after a predetermined time passes from when pressing is started. The pressing is stopped when the temperature of the catalyst layers becomes a second temperature or lower, which is a temperature lower than the first temperature, after the heating is stopped.
The changes to the abstract are shown below:
A transferring method for transferring a catalyst layer to a desired position on an electrolyte film includes the following processes. A multi-layer body is formed by stacking base materials and an electrolyte film on one another such that catalyst layers formed on the base materials are brought into contact with the electrolyte film. The multi-layer body is pressed from a stacking direction. The multi-layer body is heated to a first temperature. The heating is stopped after a predetermined time passes from when pressing is started. The pressing is stopped when the temperature of the catalyst layers becomes a second temperature or lower, which is a temperature lower than the first temperature, after the heating is stopped.

First claim

1 . A method of transferring a catalyst layer, comprising:
a process of forming a multi-layer body by stacking base materials and an electrolyte film on one another such that catalyst layers formed on the base materials are brought into contact with the electrolyte film; a process of setting the multi-layer body in a pressing apparatus and pressing the multi-layer body using the pressing apparatus from a stacking direction; a process of heating the multi-layer body to a first temperature; a process of stopping the heating after a predetermined time passes from when pressing is started; a process of stopping pressing performed by the pressing apparatus when the temperature of the catalyst layers becomes a second temperature or lower, which is a temperature lower than the first temperature and higher than room temperature, after the heating is stopped; and a process of removing the multi-layer body from the pressing apparatus and storing the multi-layer body in a different storage location whose temperature is set to room temperature lower than or equal to the second temperature.

2 . The method of transferring a catalyst layer according to claim 1 , wherein the first temperature is set to be in a range of 100° C. to a temperature of a softening point of the electrolyte film.

3 . (canceled)

4 . A jig used for the method of transferring a catalyst layer according to claim 1 , the jig comprising:
a positioning member which includes a bottom portion that places the base materials and the electrolyte film having the same shape to be stacked as the multi-layer body and a frame-like inner wall which rises from the bottom portion and performs positioning such that the base material and the electrolyte film are arranged at the same position when seen from the stacking direction; and a holding member which has a shape that coincides with the shape of the plate-like inner wall, interposes the multi-layer body to be accommodated in the inner wall together with the bottom portion from the stacking direction and transmits pressing force caused by a different pressing apparatus to the multi-layer body.

5 . (canceled)

6 . The jig according to claim 4 , wherein the thickness of the multi-layer body before pressing is smaller than the height of the inner wall, and
the total of the thickness of the holding member and the thickness of the multi-layer body before pressing is greater than the height of the inner wall.

7 . The jig according to claim 6 , wherein the height of the inner wall is set such that pressing force necessary for transferring the catalyst layer to the electrolyte film is obtained at the time when the height of the inner wall and the total of the thickness of the multi-layer body after pressing and the thickness of the holding member become equal to each other.

Assignees

• Nissan Motor

Inventors

• Yamamoto Masaya
• Toyoshima Kenichi
• Ono Kei
• Horibe Norifumi
• Terasaki Takayuki

Classifications

• H01M8/10 Primary

  Fuel cells with solid electrolytes · CPC title

• Y10T29/53135

  Storage cell or battery · CPC title

• H01M4/88 Primary

  Processes of manufacture · CPC title

• H01M8/1004 Primary

  characterised by membrane-electrode assemblies [MEA] (H01M8/12 takes precedence) · CPC title

• Y02E60/50

  Fuel cells · CPC title