Enhancement of the electrocatalytic activity of Pt nanoparticles in oxygen reduction by chlorophenyl functionalization.
نویسندگان
چکیده
Chlorophenyl-stabilized platinum nanoparticles (1.85 nm) exhibited electrocatalytic activity for oxygen reduction up to 3 times higher than that of commercial Pt/C catalysts. Similar enhancement was observed with naked Pt/C functionalized by the same chlorophenyl fragments, suggesting the important role of organic capping ligands in the manipulation of nanoparticle electrocatalytic performance.
منابع مشابه
Enhancement of the electrocatalytic activity of Pt nanoparticles in oxygen reduction by chlorophenyl functionalizationw
Proton exchange membrane fuel cells are a promising clean energy source. However, the commercialization is seriously impeded by the poor performance of cathodic catalysts in oxygen reduction reactions (ORR). The sluggish kinetics of ORR decreases the thermal efficiency by as much as 30–40% even with the use of state-of-the-art Pt catalysts. The Pt catalysts are usually dispersed as fine particl...
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ورودعنوان ژورنال:
- Chemical communications
دوره 48 28 شماره
صفحات -
تاریخ انتشار 2012