Combinatorial screening of PtTiMe ternary alloys for oxygen electroreduction.
The catalytic oxygen electroreduction properties of PtTiMe (Me = Co, Cr, Cu, Fe, Mn, Mo, Ni, Pd, Ta, V, W and Zr) ternary alloys were studied using an in-house developed thin film based combinatorial high throughput method. Libraries containing discrete alloy compositions were fabricated by plasma co-sputtering and the resulting alloys were electrochemically screened by the hydrodynamic rotating disk electrode technique. Candidate catalysts were identified by comparing the activity-stability-composition relationships between the platinum titanium alloys and pure platinum standard. Among the PtTiMe alloys studied, PtTiNi, PtTiCu and PtTiV, respectively, displayed the highest catalytic oxygen electroreduction activities with a tenfold, an eightfold and a sixfold enhancement as compared to the pure platinum standard and good chemical stabilities.
He
Ting
T
Honda Research Institute USA, Inc., 1381 Kinnear Rd., Columbus, OH 43212, USA. the@honda-ri.com
Kreidler
Eric
E
D000497:Alloys / Q000737:chemistry*; D002384:Catalysis; D020650:Combinatorial Chemistry Techniques / Q000379:methods*; D003300:Copper / Q000737:chemistry; D011211:Electric Power Supplies; D004563:Electrochemistry; D004566:Electrodes; D004577:Electron Probe Microanalysis; D008670:Metals / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry*; D010984:Platinum / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*; D014639:Vanadium / Q000737:chemistry; D014961:X-Ray Diffraction
D000497:Alloys; D008670:Metals; D014639:Vanadium; D010984:Platinum; D003300:Copper; D009532:Nickel; D014025:Titanium; D010100:Oxygen