Method for production of gas diffusion electrode

Details Method for production of gas diffusion electrode Method for production of gas diffusion electrode

1995-12-01

1997-07-15

Niebling, John

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Making catalytic electrode, process only

H01M 488

Patent

active

056483074

ABSTRACT:
A method for the production of a gas diffusion electrode having particles of a platinum group metal deposited on a carbon sheet is disclosed. This method comprises placing a water-repelling carbon sheet into contact with ozone, thereby oxidizing the surface of the sheet and forming a functional group on the surface, then immersing the sheet in a solution containing platinum group metal complex cations as dissolved seeds, thereby inducing ion exchange between the hydrogen ions present in the functional group and the platinum group metal complex cations and deposition of the platinum group metal complex cations on the carbon sheet, and further reducing the platinum group metal complex cations on the carbon into platinum group metal particles.

REFERENCES:
patent: 4009305 (1977-02-01), Fujimaki
patent: 4816289 (1989-03-01), Komatsu
patent: 5084144 (1992-01-01), Reddy et al.
patent: 5190813 (1993-03-01), Ohashi
patent: 5538585 (1996-07-01), Wakita

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