Title:
【発明の名称】金属枠付き凸型ガス拡散電極及びイオン交換膜法食塩電解槽
Document Type and Number:
Japanese Patent JP3002992
Kind Code:
B1
Abstract:
PROBLEM TO BE SOLVED: To reduce the resistance loss accompanying the resistance of an electrolyte when mounted on an electrode tank by projecting a surface of a reactive layer of an electrode forward of a surface of an outer peripheral portion of a metal frame to form a projecting portion, and sufficiently reducing the thickness of a cathodic chamber. SOLUTION: An edge portion of a gas diffusion electrode 1 in which a reactive layer, a silver net and a gas feed layer are laminated is surrounded by a silver plate frame 2 having U-shaped cross section. This gas diffusion electrode 1 is supported by an Ni metal frame 3. The metal frame 3 is formed of an Ni sheet metal of about 1 mm in thickness in a stepped manner higher toward a center. The gas diffusion electrode 1 is placed and supported on the metal frame 3 by being connected to a gas feed layer side with the gas diffusion electrode 1 laminated thereon, so that the gas diffusion electrode 1 is a projecting part with respect to the metal frame 3. The gas diffusion electrode 1 with the silver plate frame 2 in a frame fashion is placed on the metal frame 3, hot-pressed in this state, and the silver plate frame 2 can be simultaneously joined with the gas diffusion electrode 1.
Inventors:
Choichi Furuya
Application Number:
JP4842699A
Publication Date:
January 24, 2000
Filing Date:
February 25, 1999
Export Citation:
Assignee:
Choichi Furuya
Toagosei Co., Ltd.
Mitsui Chemicals, Inc.
Kanegafuchi Chemical Industry Co., Ltd.
Toagosei Co., Ltd.
Mitsui Chemicals, Inc.
Kanegafuchi Chemical Industry Co., Ltd.
International Classes:
C25B9/19; (IPC1-7): C25B11/03; C25B9/00; C25B11/04
Domestic Patent References:
| JP116092A |
Attorney, Agent or Firm:
Tadashi Hagino (3 outside)