Method for catalyzing a fuel cell electrode and an electrode...

Details Method for catalyzing a fuel cell electrode and an electrode... Method for catalyzing a fuel cell electrode and an electrode...

H - Electricity

01

M

319/15

H01M 4/88 (2006.01)

Patent

CA 1041163

ABSTRACT OF THE DISCLOSURE The disclosure teaches a process for pre-wetting a conducting particle, hydrophobic bonded, substrate supported, gas diffusion electrochemical cell electrode by causing electrolyte to wet the conducting particles in the hydrophobic- bonded portion of the electrode. The process includes the step of exposing the dry conducting particle, hydrophobic-bonded portion of the electrode to the electrolyte while maintaining the substrate substantially unexposed to the electrolyte. An external electrical potential is applied across the electrode between the substrate and the electrolyte. The potential is of sufficient magnitude to increase the rate at which the electrolyte enters and wets the conducting particle portion of the electrode. The potential is maintained for a period of time sufficient to substantially completely wet the conducting particle portion of the electrode, at which time, the external electrical potential is removed.

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