Carbon nanotube-graphene supported bimetallic electrocatalyst for direct borohydride hydrogen peroxide fuel cells

At present study, carbon nanotube-graphene (CNT-G) supported PtAu, Au and Pt catalysts were prepared by microwave-assisted synthesis method to investigate the direct liquid-fed sodium borohydride/hydrogen peroxide (NaBH 4 /H 2 O ) fuel cell performance. Prepared characterized TGA, XRD, TEM, ICP-OES, cyclic voltammetry rotating disc electrode (RDE) voltammetry. The tested in a single NaBH with 25 cm active area evaluate effects of temperature concentration on performance examined observed best operating conditions. As result experiments, maximum power densities 139 mW/cm , 125 113 obtained for PtAu/CNT-G, Au/CNT-G Pt/CNT-G catalysts, respectively. PtAu/CNT-G catalyst showed enhanced performance, which was higher than at 50 °C. can be attributed synergistic between particles CNT-G support providing better utilization interaction. These results suggest that is promising anode application. • Pt, PtAu successfully synthesized hybrid support. activity provides high cells. exhibited highest density