Preparation and characterization of carbon-supported PtTi alloy electrocatalysts

作者：Ding Errun; More Karren L; He Ting^*

来源：Journal of Power Sources, 2008, 175(2): 794-799.

DOI：10.1016/j.jpowsour.2007.10.010

• PtTi
• electrocatalysts
• alloys
• oxygen reduction reaction
• nanoparticles

Carbon-supported PtTi alloy nanoparticles with well-controlled particle size, dispersity, and composition uniformity, have been synthesized by thermal decomposition and reduction of Pt and Ti precursors at elevated temperatures. The synthesized alloy nanoparticles were characterized by X-ray diffraction, high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, and energy-dispersive spectroscopy. The catalytic activities of these alloys towards molecular oxygen electro-reduction were screened by the hydrodynamic RDE technique. Among the compositions tested, Pt(75)Ti(25) displayed the highest catalytic activity and had a twofold improvement in catalytic performance as compared to a benchmark Pt/C catalyst.

• 出版日期2008-1-10