摘要:
A proton (H+)-conducting hydrocarbon (HC)-based polymer electrolyte membrane (PEM) having first and second oppositely facing surfaces comprises a HC-based membrane with at least one perfluoropolymer incorporated on or within at least the first and second surfaces. A method for fabricating the PEM comprises surface treating a HC-based polymeric membrane sheet via immersion in an aqueous solution or dispersion of said at least one perfluoropolymer, followed by drying of the surface treated polymeric membrane sheet.
摘要:
Electrodes for use in direct oxidation fuel cells (DOFCs) comprise, in sequence: an electrically conductive gas diffusion layer; a catalyst layer; and a proton-conducting layer. Membrane electrode assemblies (MEAs) comprise cathode and anode electrodes of such type sandwiching a proton conductive polymer electrolyte membrane (PEM), with the proton-conducting layer of the electrodes in contact with opposite surfaces of the PEM. Also disclosed is a method for fabricating the MEAs.
摘要:
A method of fabricating a supported catalyst layer for use in a fuel cell electrode, comprises sequential steps of: combining a fluid ink including a supported catalyst comprising at least one precious metal or alloy supported on particles of a support material, and a solution of at least one ionomeric polymer material, with at least one pore-forming material; forming a layer of the combined ink on a surface of a sheet of support material; hot pressing the layer; and treating the hot-pressed layer to remove pore-forming material to form a supported catalyst layer.