| 초록 |
Platinum catalysts supported on graphene single nanosheet(GNS) have been prepared as catalysts for PEM fuel cells. GNS was synthesized from graphite by chemical oxidation followed by thermal exfoliation. It was characterized using SEM, FT-IR, XRD, BET and AFM analysis. Pt/GNS catalyst was prepared by mixing H2PtCl6·xH2O in ethylene glycol solution. For the Pt/GNS catalyst, XRD and TEM were employed to investigate the structural properties and dispersion of platinum particles. TGA and XPS were conducted to confirm Pt content in Pt/GNS, the oxidation state of Pt nanoparticles and surface properties of GNS such as oxygenated functional groups, respectively. To investigate electrochemical properties of Pt/GNS intercalated by CB with different content, CV and fuel cell tests were performed. |
