Patent ID: 7632601

Claim:
A fuel cell comprising: i) an oxygen-reducing cathode comprised of a ternary alloy composition comprising palladium-cobalt nanoparticles and a transitional metal other than palladium or cobalt, wherein: said ternary alloy composition is represented by the formula Pd 1−x−y Co x M y , wherein M is a transition metal other than palladium and cobalt; x and y each independently have a value of about 0.1 to about 0.9; and the sum of x and y is less than 1, and said palladium-cobalt nanoparticles are comprised, minimally, of zerovalent palladium and zerovalent cobalt and are bound to an electrically conductive support; (ii) an anode; (iii) an electrical conductor connecting said oxygen-reducing cathode with said anode; and (iv) a proton-conducting medium mutually contacting said oxygen-reducing cathode and said anode; and wherein said transition metal is a 3d transition metal.