Multimetallic Electrocatalysts of Pt, Ru, and Ir Supported on Anatase and Rutile TiO2 for Oxygen Evolution in an Acid Environment

作者：Fuentes Roderick E^*; Farell Jake; Weidner John W

来源：Electrochemical and Solid-State Letters, 2011, 14(3): E5-E7.

DOI：10.1149/1.3528163

Anatase and rutile TiO2 were investigated as stable supports for different multimetallic nanoparticles (i.e., Pt:Ru, Pt:Ir, Pt: Ru:Ir, and Ir:Ru) and tested for activity toward the oxygen evolution reaction (OER). Overall, Ir: Ru had the highest activity toward OER (i.e., current per gram of metal) compared to the other multimetallic combinations studied. This bimetallic supported on anatase TiO2 had a 53% higher current per gram of metal than an unsupported electrocatalyst of the same composition. The higher catalyst utilization of the supported electrocatalysts for OER is consistent with small, well-dispersed nanoparticles, which were observed in high resolution transmission electron microscopy images.

• 出版日期2011