کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1278302 | 1497546 | 2012 | 7 صفحه PDF | دانلود رایگان |
This study describes an atomic layer deposition (ALD) approach for the fabrication of Pt nanocatalysts supported on graphene oxide (GO) sheets and their electrocatalytic performance in electro-oxidation of formic acid. The ALD process for forming the Pt atomic layer involves two self-limiting reactions and, thus, induces the decoration of ALD-Pt on the edges of GO sheets with the presence of dangling bonds and oxygen functionalities. The resultant ALD-Pt catalyst on GO sheets offers better catalytic activity, CO tolerance, and long-term stability than those on commercial carbon support. On the basis of the results, the ALD approach described here can be applied to the design of novel catalytic materials for a variety of energy-storage applications, for example, high-performance fuel cells.
► Pt nanoparticles were grown by atomic layer deposition onto graphene oxide sheets.
► One growth mechanism involving two self-limiting reactions is proposed.
► The resultant Pt catalyst displays high-power density and long-term durability.
► The advanced design of catalyst electrode for fuel cells has been developed.
Journal: International Journal of Hydrogen Energy - Volume 37, Issue 23, December 2012, Pages 17837–17843