Title:
MANUFACTURE OF BONDED BODY OF ELECTRODE-POLYELECTROLYTE FILM
Document Type and Number:
Japanese Patent JP3162851
Kind Code:
B2
Abstract:
PURPOSE: To enhance the utilization rate of an electrode catalyst without crushing pores even though hot press is carried out by mixing the electrode catalyst with a pore-forming material to fabricate an electrode, and bonding the electrode containing the pore-forming material to a polyelectrolyte film, and removing the pore-forming material to form pores in the electrode.
CONSTITUTION: An electrode catalyst 4 comprising platinum supported to carbon black is mixed with polytetrafluoroethylene particles 5. Zinc powders are mixed as pore-forming material in the mixture and kerosine is mixed therein as a dispersion medium and then the mixture is formed into a sheet using a roller and dried to fabricate an electrode catalyst layer sheet 3. Next, the sheet 3 is immersed in and impregnated with an ion exchange material. The sheet 3 is hot pressed to both sides of an ion exchange film 2 to obtain a stack. The zinc powders are then removed by immersion in a strong acid aqueous solution, whereby a solid polyelectrolyte fuel cell with a large amount of pores 6 secured in its electrodes can be obtained.
Inventors:
Minoru Kaneko
Toshihiko Saito
Toshihiko Saito
Application Number:
JP30593A
Publication Date:
May 08, 2001
Filing Date:
January 05, 1993
Export Citation:
Assignee:
Sanyo Electric Co., Ltd.
International Classes:
H01M8/02; H01M8/10; H01M4/92; (IPC1-7): H01M8/02
Domestic Patent References:
| JP5251086A | ||||
| JP4329264A |
Attorney, Agent or Firm:
Shiro Nakajima
Previous Patent: ロールシェード用ローラー装置
Next Patent: MAGAZINE RACK SUPPLY DEVICE OF CIRCUIT BOARD INSPECTION MACHINE
Next Patent: MAGAZINE RACK SUPPLY DEVICE OF CIRCUIT BOARD INSPECTION MACHINE