Abstract
A carbon-supported Ru 85Se 15 chalcogenide catalyst was synthesized via a microwave-assisted polyol process using RuCl 3 and Na 2SeO 3 as the Ru and Se precursors. The Ru 85Se 15 chalcogenide catalyst was characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM) and inductively-coupled plasma-atomic emission spectroscopy (ICP-AES). The XRD pattern for Ru 85Se 15/C clearly exhibited the characteristic reflections of metallic ruthenium. The TEM image indicated that the Ru 85Se 15 chalcogenide catalyst was well dispersed on the surface of the carbon support with a narrow particle size distribution. Rotating disk electrode (RDE) and single-cell measurements were carried out to evaluate the electrocatalytic activity of the Ru 85Se 15 chalcogenide catalyst. The oxygen reduction reaction (ORR) activity of the Ru 85Se 15/C catalyst was compared with the commercial Pt/C catalyst with the absence/presence of methanol. In the absence of methanol, the Ru 85Se 15/C catalyst showed a comparable ORR activity with the Pt/C catalyst. However, in the presence of methanol, the Ru 85Se 15/C catalyst showed a better ORR activity than the Pt/C catalyst. The performance of the membrane electrode assembly (MEA) prepared with Ru 85Se 15/C as the cathode catalyst in a single proton exchange membrane fuel cell (PEMFC) showed the maximum power density of 400 mW cm −2 at the current density of 1300 mA cm −2.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
