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AssigneeSamsung SDI Co., Ltd.
InventorsAlexey Alexandrovichserov, Chan Kwak, Ho-Jin Kweon, Si-Hyun Lee
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A cathode catalyst for a fuel cell includes an Ru—Se alloy having an average particle size of less than or equal to 6 nm. The Ru—Se alloy is amorphous catalyst. A membrane electrode assembly and a fuel cell system include the cathode catalyst. A catalyst for a fuel cell is prepared by drying a ruthenium solution including a water-soluble ruthenium precursor to obtain a first dried product; subjecting the first dried product to a first heat-treatment to obtain a heat-treated product; adding an Se solution including a water-soluble Se precursor to the heat-treated product to obtain a mixture; drying the mixture to obtain a second dried product including ruthenium and Se; and subjecting the second dried product to second heat-treatment.
A cathode catalyst for a fuel cell, comprising an amorphous Ru—Se alloy having an average particle size of less than or equal to 6 nm, wherein the cathode catalyst includes a carbon carrier and wherein the cathode catalyst has a peak intensity ratio of a carbon peak intensity with respect to a ruthenium peak intensity (Icarbon peak/Iruthenium peak) ranging from 0.4 to 1.5 in an X-ray diffraction pattern measured using a CuK α ray.
A cathode for a fuel cell comprising a cathode catalyst comprising an amorphous Ru—Se alloy having an average particle size of less than or equal to 6 nm supported on a conductive electrode substrate, wherein the cathode catalyst includes a carbon carrier and wherein the cathode catalyst has a peak intensity ratio of a carbon peak intensity with respect to a ruthenium peak intensity (Icarbon peak/Iruthenium peak) ranging from 0.4 to 1.5 in an X-ray diffraction pattern measured using a CuK α ray.
A membrane-electrode assembly for a fuel cell, comprising:
A fuel cell system comprising:
Dependencies are inferred from the claim text.