Method for electroplating of catalyst particles on substrates containing carbon fibres and device therefor

摘要

Electrochemical deposition of catalyst particles on a carbon fiber containing substrate, comprises providing a precursor suspension containing ionomer, a hydrocarbon material in powder form and at least one metal compound on the carbon containing substrate; drying the precursor suspension; and electrochemically depositing the catalyst particle on the substrate in an aqueous electrolyte, where the carbon fiber containing substrate exhibits a leveling layer. An independent claim is included for a device, for the electrochemical deposition of the catalyst particle on the carbon fiber containing substrate, comprising a mounting plate (6) with sealing (7) for the carbon fiber containing substrate (1) coated with the precursor suspension; a container for the aqueous electrolytes (2) over the substrate provided in the mounting plate; electrical contacts (3, 4, 5) for generating electrical field in the coated carbon fiber containing substrate; and an unit (2a) for supplying and separating the aqueous electrolyte.