Patent ID: 8080347

Claim:
A catalyst for a fuel cell, comprising fine particles of a metal having an average particle diameter of not more than 10 nm represented by formula: Pt x Ru y Si z T1 u wherein T1 represents at least one element selected from the group consisting of nickel (Ni), tungsten (W), vanadium (V), and molybdenum (Mo); x=30 to 90 atomic %; y=0 to 50 atomic %; z=0.5 to 20 atomic %; and u=0.5 to 40 atomic %, wherein the area of a peak attributable to an oxygen bond of silicon (Si) in a spectrum measured by X-ray photoelectron spectroscopy (XPS) is not more than 200% of the area of a peak attributable to a metal bond of a silicon element.