Corrosion resistant gas diffusion layer with a micro...

Details Corrosion resistant gas diffusion layer with a micro... Corrosion resistant gas diffusion layer with a micro...

2011-03-22

2011-03-22

Bell, Bruce F (Department: 1759)

Chemistry: electrical and wave energy

Apparatus

Electrolytic

C204S252000, C429S480000, C429S481000, C429S483000, C429S529000, C429S534000

Reexamination Certificate

active

07909969

ABSTRACT:
A gas diffusion layer with a micro protective layer is utilized in the electrochemical cells. The cell mainly includes end plates, current collectors, flow field plates, gas diffusion layers, catalyst layers, a proton exchange membrane and a circuit unit. When the cell functions as a fuel cell, hydrogen reacts with oxygen to generate electricity and water. Reversely, when the cell functions as a water electrolysis cell, water was decomposed electrolytically to produce hydrogen and oxygen gases. In this manner, the present invention particularly has the gas diffusion layer to be coated with a micro protective layer so as to prevent the gas diffusion layer from being corroded by active oxygen species generated within the oxygen electrode under the catalysis during water electrolysis operation.

REFERENCES:
patent: 5460896 (1995-10-01), Takada et al.
patent: 2006/0222926 (2006-10-01), Sato

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