Fig. 7From: Characterization of Au and Bimetallic PtAu Nanoparticles on PDDA-Graphene Sheets as Electrocatalysts for Formic Acid OxidationThe electrochemical catalysts durability test for formic acid oxidation at the potential 300 mV for about 3000 s. The blue line is the result for PtAu/PDDA-G, the black line is for cubic Pt (60 wt.%)/G, and the yellow line is for Au/PDDA-GBack to article page