Polymer electrolyte fuel cell

Chemistry: electrical current producing apparatus – product – and – Having earth feature

Reexamination Certificate

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Details

C429S006000, C429S006000

Reexamination Certificate

active

07407723

ABSTRACT:
In a polymer electrolyte fuel cell, at least one of the anode side separator plate and cathode side separator plate is formed with a main surface having a convex shape protruding toward a gas diffusion layer, and a peripheral edge portion surrounding the main surface. An average thickness of the main surface is made to be thicker than an average thickness of the peripheral edge portion. And a difference Δt between the thickest part of the main surface and an average thickness of the peripheral edge portion is made to be 5-30 μm.

REFERENCES:
patent: 7070872 (2006-07-01), Sugiura et al.
patent: 08-045517 (1996-02-01), None

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