Effect of Nanosheet Size on Activity and Durability of RuO_2 Nanosheet Pt/C Catalyst

摘要

Composite catalyst (RuO_2ns-Pt/C) composed of commercial carbon supported Pt (Pt/C) and various size RuO_2 nanosheets (RuO_2ns) were synthesized. The improvement in ORR activity and durability of the different catalysts has been evaluated and is discussed as a function of the size of RuO_2ns. The RuO_2ns size was found to greatly influence the catalytic properties with smaller RuO_2ns giving better performance than larger ones. Composite catalyst with small sized RuO_2ns exhibit initial activity 2 times higher than Pt/C catalyst and improved activity retention rate.