Title:
固体高分子型燃料電池スタック
Document Type and Number:
Japanese Patent JP4439076
Kind Code:
B2
Abstract:
A fuel cell stack comprises membrane electrode assemblies ( 3 ) in which gas diffusion electrodes ( 2 a ,2 b) are arranged on both sides of an ion exchange membrane ( 1 ) and a reactant gas supply separators ( 5 ) interposed between the membrane electrode assemblies ( 3 ). The reactant gas supply separators ( 5 ) each has a first surface having first reactant gas supply grooves ( 9 a) for supplying first reactant gas, a second surface having second reactant gas supply grooves ( 9 b) for supplying an second reactant gas, and water supply means for supplying water to the first reactant gas supply grooves ( 9 a). The water supply means has a water supply grooves ( 15 ) for introducing water from a water supply manifold ( 14 ) disposed on the second surface, communication holes ( 16 ) for communication of the second surface with the first surface, and a buffer section ( 17 ) having a porous body ( 20 ) for uniformly distributing water from the water supply grooves ( 15 ) to the communication holes ( 16 ). The porous body ( 20 ) extends along the second surface. The water flows in the porous body ( 20 ) along the second surface. Thus, water can be supplied uniformly to the first reactant gas supply grooves ( 9 a) of each of the reactant gas supply separators ( 5 ).
Inventors:
Yasushi Kogami
Atsushi Oma
Michiro Hori
Atsushi Oma
Michiro Hori
Application Number:
JP2000099389A
Publication Date:
March 24, 2010
Filing Date:
March 31, 2000
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
H01M8/02; F16K24/04; H01M8/04; H01M8/10; H01M8/24
Domestic Patent References:
| JP7220746A | ||||
| JP9139222A |
Foreign References:
| WO1998052242A1 |
Attorney, Agent or Firm:
Kiuchi Mitsuharu