Gas diffusion electrode for electrochemical cell and process of

Details Gas diffusion electrode for electrochemical cell and process of Gas diffusion electrode for electrochemical cell and process of

1997-05-19

1998-12-08

Gorgos, Kathryn L.

Chemistry: electrical current producing apparatus, product, and

Having earth feature

429 12, 429 40, H01M 429, H01M 488

Patent

active

058466703

ABSTRACT:
Disclosed are a gas diffusion electrode for an electrochemical cell which comprises a catalyst layer formed by binding, by means of poiytotrafluoroethylene, catalyst-supporting carbon black and catalyst-non-supporting carbon black having a fluorinated polyolofine film on substantially whole surface, the catalyst layer being integrated on a substrate, and a process of preparing same.
Since the carbon black employed for the formation of the gas network in the catalyst layer of the gas diffusion electrode having the above constitution in accordance with the present invention is completely hydrophobically treated, no electrolyte permeates this portion and the carbon black exhibits high hydrophobicity so that the wet-proofing is maintained even after the long operation period to enable the gas supply to the catalyst particles so as to provide the gas diffusion electrode with a long life and high electrode performances.

REFERENCES:
patent: 4017663 (1977-04-01), Breault
patent: 4177159 (1979-12-01), Singer
patent: 4500647 (1985-02-01), Solomon
patent: 4647359 (1987-03-01), Lindstrom
patent: 4748095 (1988-05-01), Furuya et al.
patent: 4877694 (1989-10-01), Solomon et al.
patent: 4894355 (1990-01-01), Takeuchi et al.
patent: 5137754 (1992-08-01), Watanabe
patent: 5217821 (1993-06-01), Landsman et al.
patent: 5312701 (1994-05-01), Khasin et al.
M. Watanabe et al., "New Wet-proof Technique of Gas-diffusion Electrodes", Chemistry Letters, The Chemical Society of Japan, No. 7, Jul. 1991, pp. 1113-1116.
Watanabe et al., 1986, J. Electroanalytical Chem. 197:195-208 (month not available).

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