Platinum Ruthenium black, nominally Pt 50%, Ru 50% (Atomic wt%), HiSPEC^t 6000 acts as a catalyst used for anodes and cathodes in proton exchange membrane fuel cells (PEMFC) and direct methanol fuel cells (DMFC). Further, it is used in biochemical research.
Platinum-ruthenium alloy on graphitized carbon (30% Pt-Ru/Vulcan) can be used as an electrocatalyst for the fabrication of direct methanol fuel cells (DMFC) and proton exchange membrane (PEM) based fuel cells.
Alloying platinum with ruthenium has the mostmarked effect upon both hardness and resistivity.However, the limit of workability is reachedat 15% ruthenium. The lower cost and the lowerspecific gravity of ruthenium offer an appreciableeconomic benefit as an alternate to otherplatinum alloys.
Platinum–ruthenium alloy, with 10% ruthenium,has a melting point of 1800°C, and anelectrical conductivity 4% that of copper.
